1. "My wife, my sister and her son Bill," said Charlie, glancing at the photo. "I took it last week." "Your sister looks younger than you," Alan commented. Charlie nodded. "My wife is just thirty-seven, and Pam's a good bit younger than she is," he declared. "And it's funny about the ages. The squares of Pam's age and mine is thirty-seven times the sum of our two ages, and the same applies to Bill's age and mine." How old was Charlie?

38

42

40