The ratio of the number of muffins to the number of tarts in a supermarket is 4 : 1. A muffin costs $1.50 and a tart costs $0.30. If all the muffins and tarts are sold, a sum of $63 will be collected. How many muffins are there altogether?
| |
Muffins |
Tarts |
Total |
| Number |
4 u |
1 u |
|
| Value |
$1.50 |
$0.30 |
|
| Total value |
6 u |
0.3 u |
$63 |
Amount collected if all the muffins are sold
= 4 u x 1.5
= 6 u
Amount collected if all the tarts are sold
= 1 u x 0.3 u
= 0.3 u
Amount collected if all the muffins and tarts are sold
= 6 u + 0.3 u
= 6.3 u
6.3 u = 63
1 u = 63 ÷ 6.3 = 10
Total number of muffins
= 4 u
= 4 x 10
= 40
Answer(s): 40
