Time and Work Practice Test 4 with solutions

Question : 32 of 40

Marks: +1, -0

Four workers can paint a house in 8 days. How many more workers are needed to join the group if 3 such houses are to be painted in 6 days?

24
12
16
20
Cannot be determined

Validate

Solution:

Days required to paint one house = 8 days
Days required to paint 3 house = 24 days
Number of days taken by 4 workers = 24 days
Or in 24 days, work can be done by 4 workers.
In 1 day work can be done by (4 × 24) workers.
In 6 days, work can be done by

{4×24}/{6}

= 16 workers.
So, 12 more workers are required.

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