In a box of notes, the number of $2, $5 and $20 are in ratio of 5 : 6 : 6.
15 of the $2-notes is taken out and another 14 $5-notes are added. The remaining notes are worth $1334. Find the difference between the value of $20-notes and $2-notes in the end.
| |
$2 |
$5 |
$20 |
| Before |
5 u |
6 u |
6 u |
| Change |
- 1 u |
+ 14 |
|
| After |
4 u |
6 u + 14 |
6 u |
| |
$2 |
$5 |
$20 |
Total |
| Number |
4 u |
6 u + 14 |
6 u |
|
| Value |
2 |
5 |
20 |
|
| Total value |
8 u |
30 u + 70 |
120 u |
1334 |
Total value of the notes
= 8 u + 30 u + 70 + 120 u
= 158 u + 70
158 u + 70 = 1334
158 u = 1334 - 70
158 u = 1264
1 u = 1264 ÷ 158 = 8
Difference between the value of $20-notes and $2-notes in the end
= 120 u - 8 u
= 112 u
= 112 x 8
= $896
Answer(s): $896
