Question

A can do work in 30 days while b can do it in 40 days .A and b working together can do it in how mant days

Answer 1

Answer:

Step-by-step explanation:

Per day work done by,

A = 1/30

B = 1/40

A+B = 1/30 + 1/40 = 7/120

No of days in which work is completed = 120/7 = 17.14 days

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