Juanita's average monthly expense for gasoline was $80. After joining a car pool, she was able to reduce the expense by 15%.
a) What was the amount of the decrease?
b) What is Juanita's average monthly gasoline bill now?

Question

Juanita's average monthly expense for gasoline was $80. After joining a car pool, she was able to reduce the expense by 15%. 
a) What was the amount of the decrease?
b) What is Juanita's average monthly gasoline bill now?

Quizplus · Accepted Answer

a) To calculate the amount of decrease, we need to find 15% of $80 which is $12. Therefore, the amount of decrease is $12.
b) To find Juanita's average monthly gasoline bill now, we need to subtract the amount of decrease from the original average. $80 - $12 = $68. Therefore, Juanita's average monthly gasoline bill now is $68. Choice D is the only answer choice with both correct answers.

Juanita's Average Monthly Expense for Gasoline Was $80