In a bag of notes, the number of $5, $10 and $50 are in ratio of 5 : 8 : 5.
45 of the $5-notes is taken out and another 14 $10-notes are added. The remaining notes are worth $3825. Find the difference between the value of $50-notes and $5-notes in the end.
| |
$5 |
$10 |
$50 |
| Before |
5 u |
8 u |
5 u |
| Change |
- 4 u |
+ 14 |
|
| After |
1 u |
8 u + 14 |
5 u |
| |
$5 |
$10 |
$50 |
Total |
| Number |
1 u |
8 u + 14 |
5 u |
|
| Value |
5 |
10 |
50 |
|
| Total value |
5 u |
80 u + 140 |
250 u |
3825 |
Total value of the notes
= 5 u + 80 u + 140 + 250 u
= 335 u + 140
335 u + 140 = 3825
335 u = 3825 - 140
335 u = 3685
1 u = 3685 ÷ 335 = 11
Difference between the value of $50-notes and $5-notes in the end
= 250 u - 5 u
= 245 u
= 245 x 11
= $2695
Answer(s): $2695
