PSLE Tommy had 12 more two-dollar notes than fifty-dollar notes at first. He exchanged $1000 worth of fifty-dollar notes for two-dollar notes. How many less fifty-dollar notes than two-dollar notes did Tommy have after the exchange?
Number |
$2 |
$50 |
Before |
1 u + 12 |
1 u |
Change |
+ 500 |
- 20 |
After |
1 u + 12 + 500 |
1 u - 20 |
Number of fifty-dollar notes that Tommy exchanged into two-dollar notes
= 1000 ÷ 50
= 20
Number of two-dollar notes that Tommy received from the exchange
= 1000 ÷ 2
= 500
Number of less fifty-dollar notes than two-dollar notes
= 12 + 500 + 20
= 532
Answer: 532