Question

The electricity usage in a city is given. Totally 20,000 units are used per month. Find how much unit is used for heating water.

• A. 1000 units
• B. 2000 units
• C. 3000 units
• D. 4000 units

Answer 1

The correct option is D 4000 units

In total, 20,000 units of electricity is used.

20% of the electricity is used for heating water.

$20\%of20,000=\frac{20}{100}\times 20,000$

$=4,000$

Hence, 4,000 units of electricity is used for heating water.