Three schoolmates spent a total of $77. Victoria spent $7 more than Tammy and Emily spent $12 more than Victoria.
- How much money did Tammy spend?
- How much money did Emily spend?
(a)
Amount that Tammy spent = 1 u
Amount that Victoria spent = 1 u + 7
Amount that Emily spent = 1 u + 7 + 12 = 1 u + 19
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 19
= 3 u + 26
3 u + 26 = 77
3 u = 77 - 26
3 u = 51
1 u = 51 ÷ 3 = $17
Amount that Tammy spent
= 1 u
= 17
(b)
Amount that Emily spent
= 1 u + 19
= 17 + 19
= $36
Answer(s): (a) $17; (b) $36
