1.

A alone can complete work in 30 days, B alone can complete the work in 50 days. A and B together complete the 100% of the work in1. 18.75 days2. 16.75 days3. 12.75 days4. 15.75 days

Answer» Correct Answer - Option 1 : 18.75 days

Given,

A alone can complete a work in 30 days.

B alone can complete the work in 50 days.

Formula:

Total work = Efficiency × Time

Calculation:

Total work = 150 units     [LCM of 30 and 50]

Efficiency of A = 5 units/day

Efficiency of B = 3 units/day

Total efficiency of A and B = 5 + 3 = 8 units/day

100% of the total work = 150 × (100/100) = 150 units

∴ Time taken by A and B to complete 100% of the total work = 150/8 = 18.75 days



Discussion

No Comment Found

Related InterviewSolutions