Hilda spent
710 of her money on 5 shortbreads and 6 tarts. If each shortbread costs thrice as much as a tart, how many shortbreads could Hilda buy with the rest of her money?
| |
Shortbreads |
Tarts |
| Number |
5 |
6 |
| Value |
3 u |
1 u |
| Total value |
15 u |
6 u |
Cost of 1 tart = 1 u
Cost of 1 shortbread = 3 u
Total cost of 5 shortbreads and 6 tarts
= 5 x 3 u + 6 x 1 u
= 21 u
Fraction of Hilda's money left
= 1 -
710 =
310710 of Hilda's money = 21 u
110 of Hilda's money = 21 u ÷ 7 = 3 u
310 of Hilda's money = 3 u x 3 = 9 u
Number of shortbreads that Hilda could buy
= 9 u ÷ 3 u
= 3
Answer(s): 3
