Time and Work Practice Test 3 with solutions

Question : 24 of 40

Marks: +1, -0

Working together A, B, C and D will take how much time, if working individually they take 6, 72, 36 and 12 days respectively?

Solution:

Work done by A, B, C and D in one day
=

1/6 + 1/{72} + 1/{36} + 1/{12}

{12 + 1 + 2 + 6}/{72}

{21}/{72}

7/{24}

So, time taken =

{24}/7

days =

3 3/7

days

Go to Question:

Prev Question

Next Question