During her shopping trip, Winnie bought three different types of markers, S, T and U in the ratio of 4 : 3 : 8. She decided to sell them at the prices listed as shown.
Marker S : $2.90
Marker T : $0.90
Marker U : $0.40
Given that Winnie bought a total 420 markers, how much did Winnie collect from the sale of all the markers?
|
Marker S |
Marker T |
Marker U |
Total |
Ratio of marker |
4 u |
3 u |
8 u |
15 u |
Value of each marker |
$2.90 |
$0.90 |
$0.40 |
|
15 u = 420
1 u = 420 ÷ 15 = 28
Number of Marker S
= 4 x 28
= 112
Number of Marker T
= 3 x 28
= 84
Number of Marker U
= 8 x 28
= 224
Total revenue
= 112 x 2.90 + 84 x 0.90 + 224 x 0.40
= 324.80 + 75.60 + 89.60
= $490.00
Answer(s): $490.00