Question

Tammy bought a car for c dollars. One year later the car was worth 0.93c dollars. Which is another way to describe the change in the value of Tammy's car?

A. 0.93% decrease
B. 93% decrease
C. 0.07% decrease
D. 7% decrease

Answer 1

Option D.

Explanation:

It is given that Tammy bought a car for c dollars.

Original price of car = c

Price of car after 1 year = 0.93c

We need to find the change in the value of Tammy's car.

`Change\%=\frac{\text{New Price - Original price}}{\text{Original price}}* 100`

`Change\%=(0.93c-c)/(c)* 100`

`Change\%=(-0.07c)/(c)* 100`

`Change\%=-0.07* 100`

`Change\%=-7\%`

Here negative sign represents that the value of is decreasing by 7%.

Therefore, the correct option is D.