The ratio of the number of puffs to the number of macarons in a supermarket is 3 : 1. A puff costs $1.40 and a macaron costs $0.50. If all the puffs and macarons are sold, a sum of $94 will be collected. How many puffs are there altogether?
| |
Puffs |
Macarons |
Total |
| Number |
3 u |
1 u |
|
| Value |
$1.40 |
$0.50 |
|
| Total value |
4.2 u |
0.5 u |
$94 |
Amount collected if all the puffs are sold
= 3 u x 1.4
= 4.2 u
Amount collected if all the macarons are sold
= 1 u x 0.5 u
= 0.5 u
Amount collected if all the puffs and macarons are sold
= 4.2 u + 0.5 u
= 4.7 u
4.7 u = 94
1 u = 94 ÷ 4.7 = 20
Total number of puffs
= 3 u
= 3 x 20
= 60
Answer(s): 60
