Question

Three taps A, B and C can fill a tank in 24, 30
and 40 hrs respectively. If all the taps are
opened together, the tank will be filled in:
A
4 hrs
B
6 hrs
С
8 hrs
D
10 hrs

Answer 1

Answer:

Number of heart beats / min in man : 76 :: Number of heart beats / min in coaltit : .............

Answer 2

Answer:

10 hrs

Step-by-step explanation:

1/24+ 1/30+1/40

5+4+3/120

12/120

1/10

10 hrs

Hope it helps!

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