what is time and work problem?

Dear Student,

Please find below the solution to the asked query:

Here we have two examples :


1. A piece of work can be completed by 45 men in 90 days . If only 30 men are available , how many days will it take to complete the same work ?

Solution :  A piece of work can be completed by 45 men in 90 days . , So

1 man can complete same work in 90 $\times$ 45  days 

Therefore,

30 men are available then they will it take days to complete the same work $\frac{45 \times 90}{30} = 45 \times 3$ = 135  days  ( Ans )

2. The hostel of a college having 320 students has a stock of food for 80 days . If 20 students leave the hostel after 20 days , for how many more days will the food last ?

Solution :


Therefore,

64 more days will the food last .                                              ( Ans )

Hope this information will clear your doubts about topic.

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