In a bag of notes, the number of $5, $20 and $50 are in ratio of 6 : 6 : 5.
16 of the $5-notes and 14 $20-notes are taken out. The remaining notes are worth $4065. Find the difference between the value of $50-notes and $5-notes in the end.
| |
$5 |
$20 |
$50 |
| Before |
6 u |
6 u |
5 u |
| Change |
- 1 u |
- 14 |
|
| After |
5 u |
6 u - 14 |
5 u |
| |
$5 |
$20 |
$50 |
Total |
| Number |
5 u |
6 u - 14 |
5 u |
|
| Value |
5 |
20 |
50 |
|
| Total value |
25 u |
120 u - 280 |
250 u |
4065 |
Total value of the notes
= 25 u + 120 u - 280 + 250 u
= 395 u - 280
395 u - 280 = 4065
395 u = 4065 + 280
395 u = 4345
1 u = 4345 ÷ 395 = 11
Difference between the value of $50-notes and $5-notes in the end
= 250 u - 25 u
= 225 u
= 225 x 11
= $2475
Answer(s): $2475
