Natalie spent
29 of her money on 10 shortbreads and 4 cookies. If each shortbread costs twice as much as a cookie, how many shortbreads could Natalie buy with the rest of her money?
| |
Shortbreads |
Cookies |
| Number |
10 |
4 |
| Value |
2 u |
1 u |
| Total value |
20 u |
4 u |
Cost of 1 cookie = 1 u
Cost of 1 shortbread = 2 u
Total cost of 10 shortbreads and 4 cookies
= 10 x 2 u + 4 x 1 u
= 24 u
Fraction of Natalie's money left
= 1 -
29 =
7929 of Natalie's money = 24 u
19 of Natalie's money = 24 u ÷ 2 = 12 u
79 of Natalie's money = 12 u x 7 = 84 u
Number of shortbreads that Natalie could buy
= 84 u ÷ 2 u
= 42
Answer(s): 42
