Question

A group of 20 labours can complete a work in 15 days. How much labours should be added to complete that work in 12 days? Find.

Answer 1

5

Explanation:

15d -- 20l

12d -- (x)l

x= 15×20

12

x= 25

25-20= 5

Ans = 5.

Answer 2

Explanation:

workers = k× number of days (k= constant of proportionality)

w = k× days

20= 15× k

k = 20/15

w = k× days

substitute the values

w = 20/15 × 12

w = 16

Number of workers required = 16

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