## Time and Work Questions-1 | IBM Placement Papers

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This is IBM placement aptitude questions, answers and solutions on topic "Time and Work". Time and Work questions is very important topic for Aptitude test in IBM Placement Process. Practice these questions very well.

Question: A can do in 6 day and B can do in 8 and C can do in 12 days but b left after working for 6 days for how many no of day
A and C shluld work ?
Solution: B for one day work is 1/8
he worked for 6 days, so 6*1/8=3/4 work will be completed.
remaining work is 1-3/4=1/4
A and C can complete the work in 4 days
but there is only 1/4 work that is to be completed, so A and C can complete 1/4 work in 1 day..

### Question: 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men ?

Solution:
Time taken by 1 man by working 1 hr a day= 21*8*15 days
Time taken by 2 men by working 1 hr a day= 21*8*15/2=21*4*15
So time taken by 3 women by working 1 hr a day= 21*4*15
So Time taken by 1 woman by working 1 hr a day=21*4*15*3
So Time taken by 21 women by working 6 hr a day=21*4*15*3/6*21=30 days

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