Question
Five numbers are arranged in decreasing order. The
average of the first four numbers is 60, and the average of the last four numbers is 55. What is the difference between the first and the last number?Solution
- A woman is one-third as efficient as a man. How much time will 9 women take to complete a job that is 75% of the work done by 10 men in 12 days?
35 men can complete a piece of work in 40 days. ‘x’ men started the work and after 30 days 60 more men joined them so that whole work was finished i...
35 people working 7 hours a day take 22 days to complete a task. How many people working for 6 hours a day are needed to complete five times the given t...
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A and B together, B and C together and A and C together can complete a piece of work in 12 days, 11 days and 9 days respectively. Find the ratio ...
Aman is twice as efficient as Suman. Both of them began working together, but Aman stopped after 12 days. Suman then finished the remaining work in 4 da...
X men can complete the piece of work in 35 days and (X + 34) men can complete the same work in 14 days less than that of days taken by X men. Find the v...
‘A’ and ‘B’ alone can do a certain work in 30 days and 40 days, respectively. Both started the work together but after ‘x’ days ‘A’ left...
Mike and Jenny alone can complete a task in 24 days and 40 days respectively. They aim to finish the work in 'd' days. What percentage increase in Jenny...
- Raj alone can complete a work in 25 days. Mohan is five times as efficient as Raj. Find the percentage of work completed by Raj and Mohan together in 5 day...
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