A company employed 200 workers to complete a certain work in 150 days. If only one-fourth of the work has been done in 50 days, then in order to complete the whole work in time, the number of additional workers to be employed was

• 100

• 300

• 600

• 600

If a man earns ₹ 2000 for his first 50 hours of work in a week and is then paid one and a half times his regular hourly rate for any additional hours, then the hours must he work to make ₹ 2300 in a week is

• 6 hours

• 4 hours

• 7 hours

• 7 hours

Raj and Ram working together do a piece of work in 10 days. Raj alone can do it in 12 days. Raj alone will do the work in 

• 20 days

• 40 days

• 50 days

• 50 days

15 men take 20 days to complete a job working 8 hours a day. The number of hours a day should 20 men take to complete the job in 12 days

• 5 hours

• 10 hours

• 15 hours

• 15 hours

A, B and C can do a job in 6 days, 12 days and 15 days respectively. After  of the work is completed. C leaves the job. Rest of the work is done by A and B together. Time taken to finish the work in

A man is twice as fast as a woman and a woman is twice as fast as a boy in doing a work. If all of them, a man, a woman and a boy can finish the work in 7 days. In how many days a boy will do it alone?

• 49

• 7

• 6

• 6

A, B and C are employed to do a piece of work for ₹ 575. A and C are supposed to finish  of the work together. Amount shall be paid to B is

• ₹ 210

• ₹ 100

• ₹ 200

• ₹ 200

If x men can do a piece of work in x days, then the number of days in which y men can do the same work is

• xy days

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• 
• 

A farmer can plough a field working 6 hours per day in 18 days. The worker has to work how many hours per day to finish the same work in 12 days?

• 7

• 9

• 11

• 11

40.

Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked  as efficiently as he actually did, the work would have been completed in 3 days. To complete the job alone, A would require

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• 
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