Question

A can do a piece of work in 100 days b and c together do the same work in 20 days .If b can do the work in same time as that of c and a together

Answer 1

Answer:

No(0)a=1/100,b+c=1/20

b=a+c

now a+b+c= 1/100+1/20=6/100------->1

now pt b=a+c in eq 1

a+a+c+c=6/100

2(a+c)=6/100

a+c=6/100*1/2=3/100

we know a =1/100

1/100+c=3/100

c=3/100-1/100=2/100=1/50=50days