During her shopping trip, Mary bought three different types of pens, B, C and D in the ratio of 6 : 3 : 7. She decided to sell them at the prices listed as shown.
Pen B : $2.50
Pen C : $0.95
Pen D : $0.50
Given that Mary bought a total 592 pens, how much did Mary collect from the sale of all the pens?
|
Pen B |
Pen C |
Pen D |
Total |
Ratio of pen |
6 u |
3 u |
7 u |
16 u |
Value of each pen |
$2.50 |
$0.95 |
$0.50 |
|
16 u = 592
1 u = 592 ÷ 16 = 37
Number of Pen B
= 6 x 37
= 222
Number of Pen C
= 3 x 37
= 111
Number of Pen D
= 7 x 37
= 259
Total revenue
= 222 x 2.50 + 111 x 0.95 + 259 x 0.50
= 555.00 + 105.45 + 129.50
= $789.95
Answer(s): $789.95