EASY
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A certain number of answer sheets can be checked in 12 days working 5 hours each day by 9 examiners. For how many hours a day should 4 examiners work to check twice the number of answer sheets in 30 days?

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Important Questions on Ratio and Proportion

MEDIUM
A contractor takes a contract to complete a road in 60 days and employed 70 labourers. After 25 days, he found that one fourth of work is completed. How many more labours he required to complete the remaining work in time?
MEDIUM
40 persons take 6 days to complete a certain task working 10 hours a day. How many hours a day will be sufficient for 30 persons to complete the same task in 10 days?
MEDIUM
A certain job was assigned to a group of men to do it in 20 days. But 12 men did not turn up for the job and the remaining men did the job in 32 days. What is the original number of men in the group ?
HARD
25 men with 10 boys can do in 6 days as much work as 21 men with 30 boys can do in 5 days. How many boys must help 40 men to do the same work in 4 days?
EASY
22 men can complete a job in 16 days In how many days will 32 men complete that job?
MEDIUM
A fort has provisions for 60 days. If after 15 days 500 men strengthen them and the food lasts 40 days longer, how many men are there in the fort?
EASY
15 men can complete a work in 10 days while 20 boys can complete the same work in 15 days. How many days 10 men and 10 boys together take to complete the same work?
EASY
36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?
EASY
15 people can fill 35 boxes in 7 days. How many people are required to fill 65 boxes in 5 days?
EASY
15 men can do a piece of work in 6 days. How many men would be required to do the same work in 7.5 days?
MEDIUM
40 cattle can graze a grassland for 60 days. The number of cattle will graze a grassland 2 times as large in 40 days is?
EASY
35 women can do a piece of work in 15 days. How many women would be required to do the same work in 25 days?
EASY
Mani's monthly income is three-fourth Rakhi's monthly income. Rakhi's monthly income is Rs. 38,000. What is Mani's annual income?
EASY
If 5 men can do piece of work in 20 days, in how many days will 10 men and 5 boys do the same work if man does as much work as 2 boys?
HARD
Two men alone or three women alone can complete a piece of work in 4 days. In how many days can one woman and one man together complete the same piece of work?
MEDIUM
A contractor took a contract for building 12 kilometre road in 15 days and employed 100 labours on the work. After 9 days he found that only 5 kilometre road had been constructed. How many more labours should be employed to ensure that the work may be completed within the given time?
EASY
18 Children can do a piece of work in 12 days. How many children would be required to do the same work in 8 days?
EASY
14 people can complete a work in 16 days. 8 people started the work. 12 days after they started the work, 8 more people joined them. How many days will they take to complete the remaining work?
EASY

16 Men can do a piece of work in 8 days. In how many days can 12 men complete the same piece of work?

EASY
18 women complete a project in 24 days and 24 men complete the same project in 15  days. 16 women worked for 3 days and then they left. 20  men work for next 2 days and then they are joined by 16 women. In how many days will they complete the remaining work?