The ratio of the number of puffs to the number of cupcakes in a shop is 2 : 1. A puff costs $1.50 and a cupcake costs $0.80. If all the puffs and cupcakes are sold, a sum of $114 will be collected. How many puffs are there altogether?
| |
Puffs |
Cupcakes |
Total |
| Number |
2 u |
1 u |
|
| Value |
$1.50 |
$0.80 |
|
| Total value |
3 u |
0.8 u |
$114 |
Amount collected if all the puffs are sold
= 2 u x 1.5
= 3 u
Amount collected if all the cupcakes are sold
= 1 u x 0.8 u
= 0.8 u
Amount collected if all the puffs and cupcakes are sold
= 3 u + 0.8 u
= 3.8 u
3.8 u = 114
1 u = 114 ÷ 3.8 = 30
Total number of puffs
= 2 u
= 2 x 30
= 60
Answer(s): 60
