The ratio of the number of croissants to the number of muffins in a kiosk is 2 : 1. A croissant costs $1.40 and a muffin costs $0.90. If all the croissants and muffins are sold, a sum of $74 will be collected. How many croissants are there altogether?
| |
Croissants |
Muffins |
Total |
| Number |
2 u |
1 u |
|
| Value |
$1.40 |
$0.90 |
|
| Total value |
2.8 u |
0.9 u |
$74 |
Amount collected if all the croissants are sold
= 2 u x 1.4
= 2.8 u
Amount collected if all the muffins are sold
= 1 u x 0.9 u
= 0.9 u
Amount collected if all the croissants and muffins are sold
= 2.8 u + 0.9 u
= 3.7 u
3.7 u = 74
1 u = 74 ÷ 3.7 = 20
Total number of croissants
= 2 u
= 2 x 20
= 40
Answer(s): 40
