Algebraic trouble

Question

My math question is this:

Raj has a $25.00 budget to spend on decorations for a party. He has already spent $18.60. He now wants to get some helium balloons that cost $0.80 each.

Write and solve an inequality to show the number of balloons that Raj can buy.

Answer 1

25 - 18.60 = 6.40 left to spend on balloons

Let x = number of balloons

0.80x ≤6.40

To solve:

Divide both sides by 0.80 to solve for x

0.80x/0.80 ≤ 6.40/0.80

x ≤ 8