The amount of electricity used in a typical all-electric home is shown in the circle graph. If, in a certain month, a home used 2,000 kwh (kilowatt-hours), find the amounts of electricity used by the water heater from the graph.
A) 2,200 kwh
B) 22,000 kwh
C) 220 kwh
D) 1,818 kwh
E) 182 kwh

Question

The amount of electricity used in a typical all-electric home is shown in the circle graph. If, in a certain month, a home used 2,000 kwh (kilowatt-hours), find the amounts of electricity used by the water heater from the graph. ​  ​
A) 2,200 kwh 
B) 22,000 kwh 
C) 220 kwh 
D) 1,818 kwh 
E) 182 kwh

Quizplus · Accepted Answer

From the graph, we can see that the water heater accounts for 11% of the total electricity used in the home. To find the amount of electricity used by the water heater, we can multiply the total electricity used (2,000 kwh) by the percentage (11% or 0.11):
2,000 kwh x 0.11 = 220 kwh
Therefore, the amount of electricity used by the water heater is 220 kwh, which is answer choice C.

The Amount of Electricity Used in a Typical All-Electric Home