BB Logo Spacer
Spacer
Line
Line

 

My bath has two taps and a plug hole. The cold tap on its own fills the bath in 12 minutes, the hot one in 8 minutes. The plug hole can drain the bath in 24 minutes with the taps off. How long will the bath take to fill if I leave both taps on with the plug left out?

 [Ref: ZWJG] © Kevin Stone

6 minutes.

In 24 hours, the cold tap could fill 120 baths, the hot tap could fill 180 baths and the plug could drain 60 baths.

Therefore, in 24 hours, we have 120 + 180 - 60 baths full = 240 baths.

Therefore each bath would take 6 minutes to fill.

Back to the puzzles...

 

This website uses cookies, for more information please view our privacy policy.

Line
Line