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Question

If the oil is putting in the machine at the rate of $$1000  l$$ in $$1  hr$$, then how much time will it take to fill the $$25$$  tonnes of oil capacity machine, taking the proportional relationship between oil filling rate.


A
25 hrs
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B
40 hrs
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C
140 hrs
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D
125 hrs
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Solution

The correct option is A $$25 \   hrs$$
One hour taken to fill $$= 1000\  l$$
$$1\  tonn = 1000\ l$$
$$25\  tonnes = 1000 \times 25 = 25000\  l$$
For $$1000\ l$$, time required$$ = 1\  hour$$
So, for $$25000\ l$$, time required $$ = \dfrac{1}{1000} \times 25000 = 25\   hours$$

Physics

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