Three schoolmates spent a total of $73. Mary spent $7 more than Joelle and Pamela spent $5 more than Mary.
- How much money did Joelle spend?
- How much money did Pamela spend?
(a)
Amount that Joelle spent = 1 u
Amount that Mary spent = 1 u + 7
Amount that Pamela spent = 1 u + 7 + 5 = 1 u + 12
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 12
= 3 u + 19
3 u + 19 = 73
3 u = 73 - 19
3 u = 54
1 u = 54 ÷ 3 = $18
Amount that Joelle spent
= 1 u
= 18
(b)
Amount that Pamela spent
= 1 u + 12
= 18 + 12
= $30
Answer(s): (a) $18; (b) $30
