Question

Tap x can fill a tank in 20 hours, y in 25 hours but tap z can empty a full tank in 30 hours. starting with x, followed by y and z each tap opens alternatively for one hour period till the tank gets filled up completely. in how many hour the tank will be filled up completely

Answer 1

please mark it as a brainliest answer

Answer 2

pls mark me as the brainliests answer