Tina spent
79 of her money on 10 shortbreads and 8 macarons. If each shortbread costs twice as much as a macaron, how many shortbreads could Tina buy with the rest of her money?
| |
Shortbreads |
Macarons |
| Number |
10 |
8 |
| Value |
2 u |
1 u |
| Total value |
20 u |
8 u |
Cost of 1 macaron = 1 u
Cost of 1 shortbread = 2 u
Total cost of 10 shortbreads and 8 macarons
= 10 x 2 u + 8 x 1 u
= 28 u
Fraction of Tina's money left
= 1 -
79 =
2979 of Tina's money = 28 u
19 of Tina's money = 28 u ÷ 7 = 4 u
29 of Tina's money = 4 u x 2 = 8 u
Number of shortbreads that Tina could buy
= 8 u ÷ 2 u
= 4
Answer(s): 4
