Ivory spent
45 of her money on some cookies and
34 of her remaining money on 7 croissants. Each croissant cost thrice as much as a cookie. How many cookies did she buy?
Cookies |
Remaining money |
4x4 |
1x4 |
|
7 Croissants |
Left |
|
3x1 |
1x1 |
16 u |
3 u |
1 u |
Cost of 1 croissant = Cost of 3 cookies
(x7)Cost of 7 croissants = Cost of 21 cookies
3 u = 21
1 u = 21 ÷ 3 = 7
Number of cookies that Ivory bought
= 16 u
= 16 x 7
= 112
Answer(s): 112