Question

Three taps can fill a tank . Tap 1 alone can fill tha tank in 30 minutes . Tap 2 can fill it in 40 minutes while Tap 3 can fill it in 60 minutes . If all the three taps are opened together , how long will it take to fill the tank ?

Answer 1

Answer:

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Answer 2

Answer:

$\huge\underline\mathfrak{779}$