Mark (✓) against the correct answer:


Mark (✓) against the correct answer:

6 pipes can fill a tank in 24 minutes. One pipe can fill it in

(a) 4 minutes

(b) 30 minutes

(c) 72 minutes

(d) 144 minutes


(d) 144 minutes

Let one pipe take x min to fill the tank.

Clearly, one pipe will take more time to fill the tank.

So, it is a case of inverse proportion.

Now, $6 \times 24=1 \times x$

$\Rightarrow x=6 \times 24$

$\Rightarrow x=144$

∴ One pipe can fill the tank in 144 minutes.


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