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

Answer:

Option D.

Step-by-step 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.

$Change\%=\dfrac{\text{New Price - Original price}}{\text{Original price}}\times 100$

$Change\%=\dfrac{0.93c-c}{c}\times 100$

$Change\%=\dfrac{-0.07c}{c}\times 100$

$Change\%=-0.07\times 100$

$Change\%=-7\%$

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

Therefore, the correct option is D.