1997 PMWC Problems/Problem I6
From AoPSWiki
Problem
John and Mary went to a book shop and bought some exercise books. They had 
100 each. John could buy 7 large and 4 small ones. Mary could buy 5 large and 6 small ones and had 5 left. How much was a small exercise book?
Solution
Plugging them back in, we see that they work.
See also
| 1997 PMWC (Problems) | ||
| Preceded by Problem I5 | Followed by Problem I7 | |
| I: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 T: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 | ||
