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Question

A 14.4 kg of gas cylinder runs for 104 hours when the smaller burner on the gas stove is fully opened, while it runs for 80 hours when the larger burner on the gas stove is fully opened. Which of these values are the closest to the percentage difference in the usage of gas per hour, between the smaller and the larger burner ?

A
26.23%
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B
30%
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C
32.23%
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D
23.07%
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Solution

The correct option is B 30%
Capacity of gas cylinder =14.4 kg
Smaller burner consumes gas =14.4104=0.1384 kg per hour.
Larger burner consumes gas =14.480=0.18 kg per hour.
Now, difference in consumption per hour =0.180.1384=0.0416 kg
The percentage difference =(0.04160.1384)×100=30%.

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