railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency

A is three times as efficient as B and takes 60 days less than B for doing a job. The time in which they can do it together is?

1

15 days

2

30 days

3

\(22\frac{1}{2}days\)

4

60 days

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