The ratio of the number of wafers to the number of puffs in a kiosk is 2 : 1. A wafer costs $1.60 and a puff costs $0.50. If all the wafers and puffs are sold, a sum of $148 will be collected. How many wafers are there altogether?
| |
Wafers |
Puffs |
Total |
| Number |
2 u |
1 u |
|
| Value |
$1.60 |
$0.50 |
|
| Total value |
3.2 u |
0.5 u |
$148 |
Amount collected if all the wafers are sold
= 2 u x 1.6
= 3.2 u
Amount collected if all the puffs are sold
= 1 u x 0.5 u
= 0.5 u
Amount collected if all the wafers and puffs are sold
= 3.2 u + 0.5 u
= 3.7 u
3.7 u = 148
1 u = 148 ÷ 3.7 = 40
Total number of wafers
= 2 u
= 2 x 40
= 80
Answer(s): 80
