Question

Ratna and Hatim together can finish a piece of work in 4 days.
If Ratna does twice the work that Hatim does in 1 day, then in how many days will each can finish the work
alone.
days to do this piece of work alone.
Ratna will take
Hatim will take
days to do this piece of work alone.​

Answer 1

Answer:

here is your answer hope you understand

Answer 2

Answer:

Step-by-step explanation:

1/a+1/b=1/12

1/b+1/c=1/15

given 2a=c

put the value of c in eqn 2 we get

1/b+1/2a=1/15

then solve the eqn 1 & eqn 3 we get

a=30 b=20 c 60 ans is 20 days alone finish the work