Three colleagues spent a total of $72. Victoria spent $11 more than Shannon and Joelle spent $11 more than Victoria.
- How much money did Shannon spend?
- How much money did Joelle spend?
(a)
Amount that Shannon spent = 1 u
Amount that Victoria spent = 1 u + 11
Amount that Joelle spent = 1 u + 11 + 11 = 1 u + 22
Total amount that they spent
= 1 u + 1 u + 11 + 1 u + 22
= 3 u + 33
3 u + 33 = 72
3 u = 72 - 33
3 u = 39
1 u = 39 ÷ 3 = $13
Amount that Shannon spent
= 1 u
= 13
(b)
Amount that Joelle spent
= 1 u + 22
= 13 + 22
= $35
Answer(s): (a) $13; (b) $35
