Class 8th Time and Work-1

5. Rs. 125 6. Rs. 300 7. can not say 8. 75 grams 9. 4 days 10. 8 hours per day 11. 2 hours 12. (a) 5 months (b) Rs 42000 13. (a) 24 days (b) 14 tables 14. 5 days

- Ramdin can reap a field in 30 days. What part of the field would he have reaped in 25 days?
- If 12 men working 8 hours a day can construct a shed in 5 days, then in how many days will 8 men working 10 hours a day complete the same job?
- Three ants separately can gobble a dead grasshopper in 3, 4 and 6 days respectively. How many days will they take together to finish off the poor chap? If the grasshopper weighs 63 grams, find the share of each.
- If a chicken lays an egg and a half in a day. how long does it take to get a dozen eggs from a chicken?
- A dozen pens cost 15 rupees. How much would a hundred pens cost?
- 400 grams cake costs 80 rupees. How much would a 1.5 kg cake cost?
- It rained 80 mm in first 20 days of April. What would be the total rainfall in April?
- 50 grams of fish food is sufficient for 8 fish for a day. How much would 12 fish require in a day?
- 50 grams of fish food is sufficient for 8 fish for a day. On the same amount of food, for how many days can 2 fish survive?
- A man builds a chair in 4 days, working 6 hours a day. How many hours should he work in a day if he wants to do it in 3 days instead of 4 days?
- Four men working together take 3 hours to paint a wall. How much time would 6 men take to do the same job?
- A man earns Rs 18000 in 3 months.(a) How much time would he take to earn Rs 30000?(b) How much will he earn in 7 months?
- Ram can build a table in 6 days while Shyam requires 8 days for the same work. Working together, (a) how many days would they require to construct 7 tables? (b) How many tables can they construct in 48 days?
- A man and a woman working together can sow a field in 20/9 days. The man alone can do it in 4 days. How much time would the woman working alone take to sow the field?

5. Rs. 125 6. Rs. 300 7. can not say 8. 75 grams 9. 4 days 10. 8 hours per day 11. 2 hours 12. (a) 5 months (b) Rs 42000 13. (a) 24 days (b) 14 tables 14. 5 days

## No comments:

## Post a Comment