Podcast
Questions and Answers
A vendor buys apples at 10 for $9 and sells them at 8 for $10. What is his profit or loss percentage?
A vendor buys apples at 10 for $9 and sells them at 8 for $10. What is his profit or loss percentage?
- Profit of 20.25%
- Loss of 22%
- Loss of 15.75%
- Profit of 25.5% (correct)
Two numbers are in the ratio 3:5. If each number is increased by 10, the ratio becomes 5:7. What are the numbers?
Two numbers are in the ratio 3:5. If each number is increased by 10, the ratio becomes 5:7. What are the numbers?
- 15 and 25 (correct)
- 10 and 18
- 22 and 28
- 20 and 24
What is the least number which when divided by 12, 15, 20, and 54 leaves a remainder of 8 in each case?
What is the least number which when divided by 12, 15, 20, and 54 leaves a remainder of 8 in each case?
- 540
- 8
- 4320
- 548 (correct)
If the cost price of 12 articles is equal to the selling price of 9 articles, what is the profit percentage?
If the cost price of 12 articles is equal to the selling price of 9 articles, what is the profit percentage?
A train covers a distance of 360 km at a uniform speed. If the speed had been 10 km/hr more, it would have taken 3 hours less for the journey. What is the original speed of the train?
A train covers a distance of 360 km at a uniform speed. If the speed had been 10 km/hr more, it would have taken 3 hours less for the journey. What is the original speed of the train?
A sum of money becomes double in 10 years at simple interest. What is the rate of interest per annum?
A sum of money becomes double in 10 years at simple interest. What is the rate of interest per annum?
Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in:
Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in:
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to travel 68 km downstream.
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to travel 68 km downstream.
From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?
From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?
In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?
In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?
Flashcards
Number System
Number System
A system of classifying numbers based on their properties and the operations that can be performed on them.
LCM & HCF
LCM & HCF
LCM is the smallest multiple shared by two numbers; HCF is the largest factor.
Ratio & Proportion
Ratio & Proportion
Compares two quantities; proportion equates two ratios.
Percentage
Percentage
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Profit & Loss
Profit & Loss
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Data Interpretation
Data Interpretation
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Permutation
Permutation
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Combination
Combination
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Probability
Probability
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Mixtures & Allegations
Mixtures & Allegations
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Study Notes
- Numerical Ability encompasses a range of mathematical concepts.
Number System
- Explores number classifications, properties, and operations.
LCM & HCF
- Lowest Common Multiple (LCM) and Highest Common Factor (HCF) are methods for simplifying fractions and solving algebraic equations.
Ratio & Proportion
- Ratio expresses the quantitative relation between two amounts, while proportion equates two ratios.
Percentage
- Percentage is a ratio that is expressed as a fraction of 100, it is a way of expressing a number as parts per 100.
Profit & Loss
- Profit is the gain and Loss is the shortfall when selling an item, essential for business and trade calculations.
Time & Work
- Assesses the time to complete tasks individually or in groups.
Time-Speed-Distance
- Explores the relationships between these quantities in motion scenarios.
Simple & Compound Interest
- Simple interest is calculated on the principal, while compound interest includes interest on interest.
Mixtures & Allegations
- Deals with finding the ratio in which two or more ingredients are to be mixed to get a mixture of desired price.
Averages
- The average represents a typical value in a dataset.
Pipes & Cisterns
- Problems based on filling or emptying tanks using multiple inlets or outlets.
Boats & Streams
- Examines the impact of water currents on boat speed and travel time.
Probability
- Measures the likelihood of an event occurring.
Permutation & Combination
- Permutation is the number of ways of arranging items in a particular order, while Combination is the selection of items when order is not important.
Data Interpretation
- Involves extracting and interpreting information from tables, pie charts, and bar graphs to make data-driven conclusions.
- Data interpretation includes calculations involving percentage, profit and loss, ratio and proportion, LCM and HCF, number system, time and work, time-speed-distance, simple and compound interest, and mixtures and allegations.
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