Usha had an equal number of $2 and $100 notes. After spending 41 pieces of $100 and 33 pieces of $2 notes, the ratio of the $2 notes to $100 notes left was 7 : 3. Find the value of the notes left.
|
$2 |
$100 |
Before |
7 u + 33 |
3 u + 41 |
Change |
- 33 |
- 41 |
After |
7 u |
3 u |
Number of $2 notes at first = 7 u + 33
Number of $100 notes at first = 3 u + 41
The number of $2 and $100 notes at first is the same.
7 u + 33 = 3 u + 41
7 u - 3 u = 41 - 33
4 u = 8
1 u = 8 ÷ 4 = 2
Value of $2-notes left
= 7 u x 2
= 7 x 2 x 2
= $28
Value of $100-notes left
= 3 u x 100
= 3 x 2 x 100
= $600
Value of notes left
= 28 + 600
= $628
Answer(s): $628