railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency

A is only 40% as efficient as B. C is 50% as efficient as A and B together. If C alone completes the task in 30 days, then A, B and C together can complete the task in:

1

12 days

2

10 days

3

8 days

4

5 days

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