Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? The paintbrushes cost $0.95 and the jar of paint cost $.099 each.

Question

Mathematics

Guest

22 August, 14:20

Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? The paintbrushes cost $0.95 and the jar of paint cost $.099 each.

+3

Answers (1)

Know the Answer?

Niko Arellano · Answer 1

Isabella can buy together 5 paintbrushes (p) and jars of paint (p) : j + p = 5, She can't buy 4 items (because 4 * $0.99 = $3.96 $4.87). So: p = 5 - j. Another equation is: 0.95 * (5 - j) + 0.99 j = 4.87, 4.75 - 0.95 j + 0.99 j = 4.87; 0.04 j = 0.12; j = 0.12 : 0.04; j = 3, p = 5 - 3 = 2. We can prove it: 0.95 * 2 + 0.99 * 3 = 1.90 + 2.97 = 4.87. Answer: Isabella buys 2 paintbrushes and 3 jars of paint.