Dana has $5 more than Natalie. Vanessa has thrice as much money as Dana. They have a total of $100.
- How much money does Dana have?
- How much money does Vanessa have?
(a)
Amount that Dana has = 1 u
Amount that Natalie has = 1 u - 5
Amount that Vanessa has = 3 u
Total amount that they has
= 1 u + 1 u - 5 + 3 u
= 5 u - 5
5 u - 5 = 100
5 u = 100 + 5
5 u = 105
1 u = 105 ÷ 5 = 21
(b)
Amount that Vanessa has
= 3 u
= 3 x 21
= $63
Answer(s): (a) $21; (b) $63