state gov JKSSB Class IV Mock Test Quantitative Aptitude Time and Work Work Efficiency

A, B, and C can do a piece of work in 20, 24, 30 days respectively. They started the work together and A and C left 3 days before completion. Find the number of days in which the whole work is completed.

1

10 days

2

7 days

3

8 days

4

12 days

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