Question

1.If 15 people can build a wall in 30 days. How long will 25 people take to build the same wall
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Answer 1

Answer:

✳ 25 workers can build the wall in 18 days.

SOLUTION

It is said in the question that , 15 people can build a wall in 30 days.

We are asked to find out how long will 25 people take to build the same wall .

Let us assume that the time that is taken by the 25 people to build the wall be 'x'.

Since , the wall is the same the work done to construct both will be same .

$\implies$ 15 × 30 = 25 × x

$\implies$ 450 = 25x

$\implies \sf x = \dfrac{450}{25}$

$\implies$ x = 18 days.