A book costs 4 times as much as a toy car. If the book costs $ 36 more than the toy car, find the cost of the book.

Question

How do I find the answer

Answer 1

Y is price of book

X is price of car

 

A book costs 4 times as much as a toy car

Y=4X

 

The book costs $36 more than the toy car

Y=x+36

 

Y=4X  and  Y=x+36  so  4X=x+36

 

4X=x+36 --> 4X-X=+36  --> 3X=36  --> X=12

The car costs 12$

The book costs 4 times more --> Y=4X  --> Y=4•12$  --> Y=48$

 

The Book costs Y=48$

 

 

Answer 2

Lindsey, if the price of the car is c, then the book is 4c. The book is also c + 36.

 

4c = c + 36

3c = 36

c = 12

 

The book is 4($12) = $48 or $12 + $36 = $48.

 

Hope this helps!