Question

Mohan do a work in 9 hour .Mohan and sohan both do a work in 5 hour tell that how much time sohan will take to do it (formula)​

Answer 1

Answer:

you can do it by taking x or by direct and inverse variations

Answer 2

Answer:

1/9+1/x=1/5

Step-by-step explanation:

(x+9)/9x=1/5

5=9x/(x+9)

5x+45=9x

4x=45

x=45/4=11.25 hours