If Ajay completes a project in 7 days and Kajol alone completes the same project in 8 days then in h...........

Quant (SSC) Percentage

If Ajay completes a project in 7 days and Kajol alone completes the same project in 8 days, then in how many days will they complete the project if they both work together?

2.73

2.57

3.73

5.55

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Explanation:

Ajay alone completes the project in 7 days
∴ Work completed by Ajay in one day = 1/7
Kajol alone completes the project in 8 days
∴ Work completed by Kajol in one day = 1/8
∴ Work completed by Ajay and Kajol in one day
= 1/7 + 1/8 = 15/56
Number of days to complete the work
= 1/work done in one day = 56/15 = 3.73 days
∴ Ajay and Kajol working together can finish the work in 3.73 days.