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प्रश्न
Water is pouring into a cubiodal reservoir at the rate of 60 litres per minute. If the volume of the reservoir is 108 m3, find the number of hours it will take to fill the reservoir.
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उत्तर
Volume of cuboidal reservoir = 108 m3 = (108 × 1000) L = 108000 L
Rate of pouring water = 60 L/minute
∴ Time to fill the reservoir
= `"Volume of reservoir"/ "Rate of pouring water"`
= `(108 xx 10^3)/60`
= 1.8 × 103 min.
= 1800 min.
= 30 hrs.
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