There are 7 times as many trucks than cars. If the total number of cars and trucks is 72, how many trucks are there?

Question

There are 7 times as many trucks than cars. If the total number of cars and trucks is 72, how many trucks are there

Answer 1

Hi Roxanne

 

Let

T = #trucks

C = # cars

 

T + C = 72

T = 7C

 

Using substitution

 

7C + C = 72

8C = 72

C = 9

T = 7(9) = 63

63+ 9 = 72

 

There are 9 cars and 63 trucks.