rational equations

Question

It takes an older pump 4

 times as long to drain a certain pool as it does a newer pump. Working together, it takes the two pumps 2

 hours to drain the pool. How long will it take the newer pump to drain the pool working alone?Do not do any rounding.

Answer 1

t represents the time needed by the new pump

4t represents the time needed by the old pump

(2 / t) + (2 / 4t) = 1

Can you solve for t and answer?