Question

P can do 2/5 part of some work in 10 days . If P and Q can do 1/3 part of the some work in 5 day . What is the ratio of their efficiencies​

Answer 1

Step-by-step explanation:

1/3 of the work is done by a in 5days

therefore whole work can be done by a in 15days

2/3work of dayscan done by b in 10 days

whole work can be done b in10x is 5/2

(a + b)'S one day work1/5 + 1/15

=8/75 days