During her shopping trip, Usha bought three different types of pens, C, D and E in the ratio of 4 : 2 : 7. She decided to sell them at the prices listed as shown.
Pen C : $2.10
Pen D : $0.80
Pen E : $0.40
Given that Usha bought a total 598 pens, how much did Usha collect from the sale of all the pens?
|
Pen C |
Pen D |
Pen E |
Total |
Ratio of pen |
4 u |
2 u |
7 u |
13 u |
Value of each pen |
$2.10 |
$0.80 |
$0.40 |
|
13 u = 598
1 u = 598 ÷ 13 = 46
Number of Pen C
= 4 x 46
= 184
Number of Pen D
= 2 x 46
= 92
Number of Pen E
= 7 x 46
= 322
Total revenue
= 184 x 2.10 + 92 x 0.80 + 322 x 0.40
= 386.40 + 73.60 + 128.80
= $588.80
Answer(s): $588.80