Opal spent
12 of her money on some cupcakes and
47 of her remaining money on 8 cookies. Each cookie cost thrice as much as a cupcake. How many cupcakes did she buy?
Cupcakes |
Remaining money |
1x7 |
1x7 |
|
8 Cookies |
Left |
|
4x1 |
3x1 |
7 u |
4 u |
3 u |
Cost of 1 cookie = Cost of 3 cupcakes
(x8)Cost of 8 cookies = Cost of 24 cupcakes
4 u = 24
1 u = 24 ÷ 4 = 6
Number of cupcakes that Opal bought
= 7 u
= 7 x 6
= 42
Answer(s): 42