PSLE Jack had 10 more two-dollar notes than ten-dollar notes at first. He exchanged $110 worth of ten-dollar notes for two-dollar notes. How many more two-dollar notes than ten-dollar notes did Jack have after the exchange?
Number |
$2 |
$10 |
Before |
1 u + 10 |
1 u |
Change |
+ 55 |
- 11 |
After |
1 u + 10 + 55 |
1 u - 11 |
Number of ten-dollar notes that Jack exchanged into two-dollar notes
= 110 ÷ 10
= 11
Number of two-dollar notes that Jack received from the exchange
= 110 ÷ 2
= 55
Number of more two-dollar notes than ten-dollar notes
= 10 + 55 + 11
= 76
Answer: 76