Pipe A takes twice the time to fill up the pool as pipe B does.The pool can be filled up in 2 h when both pipes are opened How long will it take each pipe to fill it up alone

Question

Pipe A takes twice the time to fill up the pool as pipe B does.The pool can be filled up in 2 h when both pipes are opened How long will it take each pipe to fill it up alone
Plz slove it in Linear equation