Dana spent
59 of her money on 7 cupcakes and 9 shortbreads. If each cupcake costs thrice as much as a shortbread, how many cupcakes could Dana buy with the rest of her money?
| |
Cupcakes |
Shortbreads |
| Number |
7 |
9 |
| Value |
3 u |
1 u |
| Total value |
21 u |
9 u |
Cost of 1 shortbread = 1 u
Cost of 1 cupcake = 3 u
Total cost of 7 cupcakes and 9 shortbreads
= 7 x 3 u + 9 x 1 u
= 30 u
Fraction of Dana's money left
= 1 -
59 =
4959 of Dana's money = 30 u
19 of Dana's money = 30 u ÷ 5 = 6 u
49 of Dana's money = 6 u x 4 = 24 u
Number of cupcakes that Dana could buy
= 24 u ÷ 3 u
= 8
Answer(s): 8
