The ratio of the number of wafers to the number of scones in a shop is 2 : 1. A wafer costs $1.60 and a scone costs $0.60. If all the wafers and scones are sold, a sum of $152 will be collected. How many wafers are there altogether?
| |
Wafers |
Scones |
Total |
| Number |
2 u |
1 u |
|
| Value |
$1.60 |
$0.60 |
|
| Total value |
3.2 u |
0.6 u |
$152 |
Amount collected if all the wafers are sold
= 2 u x 1.6
= 3.2 u
Amount collected if all the scones are sold
= 1 u x 0.6 u
= 0.6 u
Amount collected if all the wafers and scones are sold
= 3.2 u + 0.6 u
= 3.8 u
3.8 u = 152
1 u = 152 ÷ 3.8 = 40
Total number of wafers
= 2 u
= 2 x 40
= 80
Answer(s): 80
