In a box of notes, the number of $2, $5 and $50 are in ratio of 7 : 7 : 5.
47 of the $2-notes and 15 $5-notes are taken out. The remaining notes are worth $3417. Find the difference between the value of $50-notes and $2-notes in the end.
| |
$2 |
$5 |
$50 |
| Before |
7 u |
7 u |
5 u |
| Change |
- 4 u |
- 15 |
|
| After |
3 u |
7 u - 15 |
5 u |
| |
$2 |
$5 |
$50 |
Total |
| Number |
3 u |
7 u - 15 |
5 u |
|
| Value |
2 |
5 |
50 |
|
| Total value |
6 u |
35 u - 75 |
250 u |
3417 |
Total value of the notes
= 6 u + 35 u - 75 + 250 u
= 291 u - 75
291 u - 75 = 3417
291 u = 3417 + 75
291 u = 3492
1 u = 3492 ÷ 291 = 12
Difference between the value of $50-notes and $2-notes in the end
= 250 u - 6 u
= 244 u
= 244 x 12
= $2928
Answer(s): $2928
