Betty spent
56 of her money on some wafers and
34 of her remaining money on 5 cupcakes. Each cupcake cost thrice as much as a wafer. How many wafers did she buy?
| Wafers |
Remaining money |
| 5x4 |
1x4 |
| |
5 Cupcakes |
Left |
| |
3x1 |
1x1 |
| 20 u |
3 u |
1 u |
Cost of 1 cupcake = Cost of 3 wafers
(x5)Cost of 5 cupcakes = Cost of 15 wafers
3 u = 15
1 u = 15 ÷ 3 = 5
Number of wafers that Betty bought
= 20 u
= 20 x 5
= 100
Answer(s): 100
