Winnie spent
211 of her money on 4 scones and 10 cookies. If each scone costs twice as much as a cookie, how many cookies could Winnie buy with the rest of her money?
| |
Scones |
Cookies |
| Number |
4 |
10 |
| Value |
2 u |
1 u |
| Total value |
8 u |
10 u |
Cost of 1 cookie = 1 u
Cost of 1 scone = 2 u
Total cost of 4 scones and 10 cookies
= 4 x 2 u + 10 x 1 u
= 18 u
Fraction of Winnie's money left
= 1 -
211 =
911211 of Winnie's money = 18 u
111 of Winnie's money = 18 u ÷ 2 = 9 u
911 of Winnie's money = 9 u x 9 = 81 u
Number of cookies that Winnie could buy
= 81 u ÷ 1 u
= 81
Answer(s): 81
