During her shopping trip, Natalie bought three different types of markers, J, K and L in the ratio of 4 : 3 : 9. She decided to sell them at the prices listed as shown.
Marker J : $2.85
Marker K : $0.80
Marker L : $0.40
Given that Natalie bought a total 400 markers, how much did Natalie collect from the sale of all the markers?
|
Marker J |
Marker K |
Marker L |
Total |
Ratio of marker |
4 u |
3 u |
9 u |
16 u |
Value of each marker |
$2.85 |
$0.80 |
$0.40 |
|
16 u = 400
1 u = 400 ÷ 16 = 25
Number of Marker J
= 4 x 25
= 100
Number of Marker K
= 3 x 25
= 75
Number of Marker L
= 9 x 25
= 225
Total revenue
= 100 x 2.85 + 75 x 0.80 + 225 x 0.40
= 285.00 + 60.00 + 90.00
= $435.00
Answer(s): $435.00