Question

bens owns two cars, car 4 and car B. This year, car A is 9 years old and car B is x years old. 5 years ago, the ratio of the age of car 4 to the age of car B was 2:5 Calculate the value of x.​

Answer 1

Answer: 45 yrs old

Explanation:

Car A = 9 yrs old

Car B = X yrs old

The ratio for the cars are

Car A : Car B

or

2 : 5

You want to make it easier to read so you make both the ratio number and the given age number (9) the same number.

Multiply Car A age by 2 to make it 18 and the Ratio 2 by 9 to make it 18. This makes them the same number. Since you did this to one side, you have to do it on the other side by multiplying the 5 by 9 which is 45.

Your new ratio is now

18 : 45

This means Car B is 45 yrs old