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

A can have a piece of work done in 8 days, B can work three times faster than the A, C can work five times faster than A. How many days will they take to do the work together?

1
4 days
2
8/9 days
3
3 days
4
10 days
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