word problem

Question

Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.

Martin wants to make scrapbooks with old family photos. An online scrapbooking company charges $39 for a basic book and $3 per page. Meanwhile, a family friend is willing to make a scrapbook for $21 plus $4 per page. For a certain number of pages, the price would be equal. How much would that cost? How many pages would that be?

 

Answer 1

39+3x=y

21+4x=y

 

39+3x=21+4x

 

x=18 pages

y=$93