PSLE Cody had 10 more ten-dollar notes than fifty-dollar notes at first. He exchanged $350 worth of fifty-dollar notes for ten-dollar notes. How many less fifty-dollar notes than ten-dollar notes did Cody have after the exchange?
Number |
$10 |
$50 |
Before |
1 u + 10 |
1 u |
Change |
+ 35 |
- 7 |
After |
1 u + 10 + 35 |
1 u - 7 |
Number of fifty-dollar notes that Cody exchanged into ten-dollar notes
= 350 ÷ 50
= 7
Number of ten-dollar notes that Cody received from the exchange
= 350 ÷ 10
= 35
Number of less fifty-dollar notes than ten-dollar notes
= 10 + 35 + 7
= 52
Answer: 52