Three schoolmates spent a total of $67. Tiffany spent $7 more than Dana and Vanessa spent $8 more than Tiffany.
- How much money did Dana spend?
- How much money did Vanessa spend?
(a)
Amount that Dana spent = 1 u
Amount that Tiffany spent = 1 u + 7
Amount that Vanessa spent = 1 u + 7 + 8 = 1 u + 15
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 15
= 3 u + 22
3 u + 22 = 67
3 u = 67 - 22
3 u = 45
1 u = 45 ÷ 3 = $15
Amount that Dana spent
= 1 u
= 15
(b)
Amount that Vanessa spent
= 1 u + 15
= 15 + 15
= $30
Answer(s): (a) $15; (b) $30
