Anna spent
911 of her money on 7 shortbreads and 6 biscuits. If each shortbread costs thrice as much as a biscuit, how many shortbreads could Anna buy with the rest of her money?
| |
Shortbreads |
Biscuits |
| Number |
7 |
6 |
| Value |
3 u |
1 u |
| Total value |
21 u |
6 u |
Cost of 1 biscuit = 1 u
Cost of 1 shortbread = 3 u
Total cost of 7 shortbreads and 6 biscuits
= 7 x 3 u + 6 x 1 u
= 27 u
Fraction of Anna's money left
= 1 -
911 =
211911 of Anna's money = 27 u
111 of Anna's money = 27 u ÷ 9 = 3 u
211 of Anna's money = 3 u x 2 = 6 u
Number of shortbreads that Anna could buy
= 6 u ÷ 3 u
= 2
Answer(s): 2
