1/50 of the pool flows through one pipe per minute, and 1/75 of the pool flows

1/50 of the pool flows through one pipe per minute, and 1/75 of the pool flows through the other. In how many minutes will the pool be filled through both pipes?

Decision:
1) 1/50 + 1/75 = 3/150 + 2/150 = 5/150 = 1/30 (part of the bass) – both pipes will be filled in 1 minute;
2) 1: 1/30 = 1 * 30 = 30 (min) – the pool will be filled through both pipes;
Answer: In 30 minutes the pool will be filled through both pipes.
Explanations. This is a teamwork challenge. The algorithm for solving such problems: we find which part of the pool both pipes will fill in 1 minute, and then partly we find the filling time with two pipes using the 1: 1/30 method and we get 30 minutes.