Question

A 14.5 kg gas cylinder runs for 115 hours when the smaller burner on the gas stove is fully opened while it runs for 86 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. 29.63%
• B. 30.25%
• C. 32.23%
• D. 33.71%

Answer 1

The correct option is D 33.71%

The % difference will be $=\frac{\frac{14.5}{86}-\frac{14.5}{115}}{\frac{14.5}{115}}\times 100=33.71\%$