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
B
40 hrs
C
140 hrs
D
125 hrs

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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