Sarah wants to buy some CDs, each costing $14, and a DVD that costs $23. She has $65 to spend. Write and solve an equation to find how many CDs she can buy.

Question

Show an Equation and Solve

Answer 1

Given this information, we know that $65 is our profit, $23 is an added amount, and $14 is multiplied against our unknown amount of cd's. Letting x = the number of cd's, our equation becomes.

 

65 = 14x + 23

 

To solve for x, we first have to subtract 23 from both sides.

 

42 = 14x

 

To get x by itself, we divide both sides by 14

 

x = 3