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Questions and Answers
If the base of a triangle is increased by 50%, by what percentage should its height be increased so that the area increases by 80%?
If the base of a triangle is increased by 50%, by what percentage should its height be increased so that the area increases by 80%?
- 18%
- 14% (correct)
- 15%
- 20%
When the price of an item was reduced by 25%, its sale increased by x%. If there is an increase of 30% in receipt of the revenue, then what is the value of x?
When the price of an item was reduced by 25%, its sale increased by x%. If there is an increase of 30% in receipt of the revenue, then what is the value of x?
- 76.24
- 75.37
- 75.73
- 73.33 (correct)
The price of a scooter increases successively by 10%, 5%, and 15%. What is the total percentage increase in the price of the scooter?
The price of a scooter increases successively by 10%, 5%, and 15%. What is the total percentage increase in the price of the scooter?
- 32 33/40
- 36 31/40 (correct)
- 30 11/40
- 34 21/40
A reduction of 30% in the price of bananas enables a customer to buy 8 more bananas for Rs 140. What is the reduced price of bananas per dozen?
A reduction of 30% in the price of bananas enables a customer to buy 8 more bananas for Rs 140. What is the reduced price of bananas per dozen?
If the price of an item increases by 10%, 5%, and 15% successively, what is the net percentage increase in the price of the item?
If the price of an item increases by 10%, 5%, and 15% successively, what is the net percentage increase in the price of the item?
A 50% increase in the base of a triangle leads to an increase in the area by what percentage?
A 50% increase in the base of a triangle leads to an increase in the area by what percentage?
In the election between Chamanlal, Arshad, and Jagjit Singh, what percentage of votes did Arshad get?
In the election between Chamanlal, Arshad, and Jagjit Singh, what percentage of votes did Arshad get?
What was the difference in votes between the winner and the person who received the least number of votes?
What was the difference in votes between the winner and the person who received the least number of votes?
What percentage of votes were declared invalid in the election between two candidates?
What percentage of votes were declared invalid in the election between two candidates?
How many votes did the candidate get in the election between two candidates?
How many votes did the candidate get in the election between two candidates?
What percentage of the total votes did the candidate who won the election get?
What percentage of the total votes did the candidate who won the election get?
What was the margin of victory in the election between two candidates?
What was the margin of victory in the election between two candidates?
What is the new consumption of sugar per month for the family?
What is the new consumption of sugar per month for the family?
What is the difference between the expenditures of A and B?
What is the difference between the expenditures of A and B?
What is the ratio of the savings of X and Y?
What is the ratio of the savings of X and Y?
If the family's sugar consumption was reduced by a certain percentage, what was the percentage decrease?
If the family's sugar consumption was reduced by a certain percentage, what was the percentage decrease?
What is the ratio of the incomes of A and B?
What is the ratio of the incomes of A and B?
What is the ratio of the incomes of A and B to their savings?
What is the ratio of the incomes of A and B to their savings?
What is the monthly salary of the person?
What is the monthly salary of the person?
What percentage of commission is awarded on sales above Rs 5000?
What percentage of commission is awarded on sales above Rs 5000?
How much less are his earnings in the second case compared to the first case?
How much less are his earnings in the second case compared to the first case?
What is the amount of sales above which commission is awarded?
What is the amount of sales above which commission is awarded?
What is the percentage of sales that we need to find?
What is the percentage of sales that we need to find?
What percentage of commission was decided initially?
What percentage of commission was decided initially?
Raju spends 20% of his income on transport. If he saves ₹3200 and his total expenditure on food and clothing is ₹23480, what is his monthly salary?
Raju spends 20% of his income on transport. If he saves ₹3200 and his total expenditure on food and clothing is ₹23480, what is his monthly salary?
Raju spends 20% of his income on transport, 15% of the remaining income on food, and 40% of the remaining income on clothing. If he saves ₹21840, what is his total expenditure on food and clothing?
Raju spends 20% of his income on transport, 15% of the remaining income on food, and 40% of the remaining income on clothing. If he saves ₹21840, what is his total expenditure on food and clothing?
If the price of sugar is increased by 40%, how much would a person's expenditure on sugar increase if they want to maintain the same consumption level?
If the price of sugar is increased by 40%, how much would a person's expenditure on sugar increase if they want to maintain the same consumption level?
If the price of sugar is increased by 40%, and a person wants to increase their expenditure on sugar by only 20%, what is the percentage change in their consumption?
If the price of sugar is increased by 40%, and a person wants to increase their expenditure on sugar by only 20%, what is the percentage change in their consumption?
If the price of sugar is increased by 25%, and a family's expenditure on sugar increases by only 10%, what is the percentage change in their consumption?
If the price of sugar is increased by 25%, and a family's expenditure on sugar increases by only 10%, what is the percentage change in their consumption?
If a person's expenditure on sugar increases by 10%, and the price of sugar increases by 25%, what is the percentage change in their consumption?
If a person's expenditure on sugar increases by 10%, and the price of sugar increases by 25%, what is the percentage change in their consumption?
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Study Notes
Percentage Change
- Decrease in base of triangle by 50% requires height to be increased by 15% to increase area by 80%.
Sales and Revenue
- 25% reduction in price of an item increases sales by x% and revenue by 30% (x = 73.33).
Successive Percentage Change
- Successive increases of 10%, 5%, and 15% in the price of a scooter results in a total increase of 34.21%.
Percentage Discounts
- 30% reduction in price of bananas enables a customer to buy 8 more bananas for Rs 140, resulting in a reduced price of Rs 63 per dozen.
Election Voting
- Arshad receives 25% of the total votes, and the winner receives 14850 more votes than the person who received the least number of votes.
Voter Turnout
- 60% of voters cast their votes, out of which 15% are declared invalid, and the winner receives 65% of the total valid votes.
Commission and Earnings
- 6% commission on sales results in a monthly salary of Rs 1200, and 3% commission on sales above Rs 5000 results in a reduction of earnings by Rs 1350.
Sugar Consumption
- 25% increase in price of sugar results in a new consumption of 28.8 kg per month, assuming the family's expenditure on sugar is only 10% more than the earlier one.
Income and Expenditure
- Ratio of incomes of A and B is 5:4, and ratio of their expenditures is 6:7, resulting in a difference of Rs 1200 in their expenditures.
Savings and Income
- Ratio of monthly incomes of X and Y is 12:11, and ratio of their monthly expenditures is 13:11, resulting in a ratio of savings of 12:19.
Salary and Expenses
- Raju spends 20% on transport, 15% on food, and 40% on clothing, and saves Rs 2000, resulting in a monthly salary of Rs 15000.
Expenditure on Food and Clothing
- Raju's saving is Rs 21840, resulting in a total expenditure on food and clothing together of Rs 24900.
Consumption and Price Change
- 40% increase in price of sugar results in a 14.29% reduction in consumption to maintain a 20% increase in expenditure.
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