The ratio of the number of muffins to the number of wafers in a stall is 5 : 1. A muffin costs $1.20 and a wafer costs $0.40. If all the muffins and wafers are sold, a sum of $64 will be collected. How many muffins are there altogether?
| |
Muffins |
Wafers |
Total |
| Number |
5 u |
1 u |
|
| Value |
$1.20 |
$0.40 |
|
| Total value |
6 u |
0.4 u |
$64 |
Amount collected if all the muffins are sold
= 5 u x 1.2
= 6 u
Amount collected if all the wafers are sold
= 1 u x 0.4 u
= 0.4 u
Amount collected if all the muffins and wafers are sold
= 6 u + 0.4 u
= 6.4 u
6.4 u = 64
1 u = 64 ÷ 6.4 = 10
Total number of muffins
= 5 u
= 5 x 10
= 50
Answer(s): 50
