In an envelope, there were a total of 220 notes. 40% of them were $50-notes. The rest were $2-notes. Elijah took out some $50-notes. As a result, the remaining $50-notes made up 20% of the notes left in the envelope. Find the total value of the $50-notes Elijah took out from the envelope.
|
$50 |
$2 |
Total |
Before |
2x4 = 8 u |
3x4 = 12 u |
5x4 = 20 u |
Change |
- ? |
|
|
After |
1x3 = 3 u |
4x3 = 12 u |
5x3 = 15 u |
40% =
40100 =
25
20% =
20100 =
15
The number of $2-notes remains unchanged. Make the number of $2-notes the same. LCM of 3 and 4 is 12.
Total number of notes at first = 20 u
20 u = 220
1 u = 220 ÷ 20 = 11
Number of $50-notes that Elijah took out from the envelope
= 8 u - 3 u
= 5 u
= 5 x 11
= 55
Total value of $50-notes taken out
= 55 x 50
= $2750
Answer(s): $2750