Chain Rule Practice Test 2 with solutions

Question : 5 of 40

Marks: +1, -0

If a certain number of persons can do a piece of work in 18 days, then in how many days half the number of person will do twice the same work?

Solution:

Let persons = P
Work done = W
P + W = 18 days

P/2 + W

= (18 + 2) days

P/2 + 2W

= (18 × 2 × 2) days = 72 days

Go to Question:

Prev Question

Next Question