Three brothers spent a total of $88. Penelope spent $10 more than Jen and Xandra spent $5 more than Penelope.
- How much money did Jen spend?
- How much money did Xandra spend?
(a)
Amount that Jen spent = 1 u
Amount that Penelope spent = 1 u + 10
Amount that Xandra spent = 1 u + 10 + 5 = 1 u + 15
Total amount that they spent
= 1 u + 1 u + 10 + 1 u + 15
= 3 u + 25
3 u + 25 = 88
3 u = 88 - 25
3 u = 63
1 u = 63 ÷ 3 = $21
Amount that Jen spent
= 1 u
= 21
(b)
Amount that Xandra spent
= 1 u + 15
= 21 + 15
= $36
Answer(s): (a) $21; (b) $36
