Xuan spent
12 of her money on some wafers and
37 of her remaining money on 5 croissants. Each croissant cost thrice as much as a wafer. How many wafers did she buy?
Wafers |
Remaining money |
1x7 |
1x7 |
|
5 Croissants |
Left |
|
3x1 |
4x1 |
7 u |
3 u |
4 u |
Cost of 1 croissant = Cost of 3 wafers
(x5)Cost of 5 croissants = Cost of 15 wafers
3 u = 15
1 u = 15 ÷ 3 = 5
Number of wafers that Xuan bought
= 7 u
= 7 x 5
= 35
Answer(s): 35