Question

A contractor requires 42 labour’s to whitewash a building in 63 days. In how to how many days will the building be whitewashed if 7 more labour’s join the work ?

Answer 1

Answer:-

54 Days

Step-by-step explanation:

THESE are in inverse proportion so

In 42 Workers||NOW 42+7

TIME-63DAYS||TIME X

so,42×63=49×X

X=42×63/49=54 Days.Answer