Question

P does a piece of work alone in 3 days
P and Q together do the work in 2 days.
How many days will take to do the
work alone?​

Answer 1

Step-by-step explanation:

p= 3

p+q=2

lcm =6

so efficiency of p=2

p+q= 3

so efficiency of q= 3-2=1

so 6×1= 6 days for alone q

Answer 2

Step-by-step explanation:

P = 3

P + Q = 2

L.C.M = 6

So, efficiency of p = 2

P + Q = 3

So, efficiency of q = 3 - 2 = 1

So, 6 × 1 = 6

So, 6 days alone Q.

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