Teaching PSTET Paper 1 & 2 Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency

A, B and C working together completed a job in 20 days. The ratio of their efficiencies is 3 : 4 : 5. How many days will be required by the fastest worker alone to complete the whole work?

1

40 days

2

48 days

3

36 days

4

72 days

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