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 Form 4 Mathematics paper 1 and paper 2 sample revision questions with answers

A cold water tap can fill a bath in 10 minutes while a hot water tap can fill it in 8 minutes. The drainage pipe can empty it in 5 minutes. The cold water and hot water taps are left running for 4 minutes. After which all the
three taps are left running. Find how long it takes to fill the bath.

 (5m 35s)
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