Erika spent
34 of her money on some wafers and
37 of her remaining money on 6 shortbreads. Each shortbread cost twice as much as a wafer. How many wafers did she buy?
Wafers |
Remaining money |
3x7 |
1x7 |
|
6 Shortbreads |
Left |
|
3x1 |
4x1 |
21 u |
3 u |
4 u |
Cost of 1 shortbread = Cost of 2 wafers
(x6)Cost of 6 shortbreads = Cost of 12 wafers
3 u = 12
1 u = 12 ÷ 3 = 4
Number of wafers that Erika bought
= 21 u
= 21 x 4
= 84
Answer(s): 84