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Questions and Answers
If 350 boxes can be placed in 25 cartons, how many boxes can be placed in 16 cartons?
If 350 boxes can be placed in 25 cartons, how many boxes can be placed in 16 cartons?
The cost of 140 tennis balls is ?, and the railway fare for 61 km is 4900. What is the cost of 2 dozen such balls?
The cost of 140 tennis balls is ?, and the railway fare for 61 km is 4900. What is the cost of 2 dozen such balls?
If 10 people can dig a trench in 6 days, how many people can dig it in 4 days?
If 10 people can dig a trench in 6 days, how many people can dig it in 4 days?
A garrison of 200 men had provisions for 45 days. After 15 days, 40 more men join the garrison. Find the number of days for which the remaining food will last.
A garrison of 200 men had provisions for 45 days. After 15 days, 40 more men join the garrison. Find the number of days for which the remaining food will last.
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Study Notes
Ratios and Proportions
- 350 boxes can be placed in 25 cartons, implying a ratio of 350:25 or 14:1 boxes per carton.
- This ratio can be used to find the number of boxes in 16 cartons.
Costs and Ratios
- 140 tennis balls cost a certain amount, allowing us to find the cost of 2 dozen (24) tennis balls.
- The cost of 140 tennis balls is unknown, but it can be used to find the cost of 24 tennis balls.
Work and Time
- 10 people can dig a trench in 6 days, implying a certain amount of work can be done in a day.
- The same trench can be dug in 4 days, implying the number of people required to do so.
Work and Supply
- A garrison of 200 men has provisions for 45 days, implying a certain amount of food per man per day.
- After 15 days, 40 more men join the garrison, changing the total number of men to 240.
- The remaining food will last for a certain number of days, which can be found using the ratio of men to food.
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Description
Test your problem-solving skills with these word problems from mathematics for Class 8. Calculate quantities of boxes, tennis balls, railway fares, and work completion based on given conditions.
