Question

Gwen bought a new car. Each year, the value of her car depreciated by 9%. Calculate the number of years after which the value of her car was 47% of its value when new.

Answer 1

Answer:

8 years

Step-by-step explanation:

What I would recommend is to just plug in a number for the original value of the car (100). So you have to find when the car will be worth $47. Not 53 like what someone else said because you're supposed to find when it's AT 47% of it's original price, not 47% LESS than it's original price. Now just take a calculator and keep taking 9% off of the car (meaning 100 x .91 [.91 is 1.00 minus .09, which is what you want], then "ANSWER" (NOT 100) x .91 etc. And when you reach 47, count how many times it took you to get there.

I got 8 years (but it's 2 cents off)

I hope this helped!