Age versus height

B eyed the sign by the rides suspiciously. "Mom," he said, tugging on Simone's arm. "It says that you have to be 42 to ride on this ride." Simone checked the notice and nodded agreeably. The sign did indeed say that one needed to be a minimum of 42 inches tall before getting on the ride. B shook his head. Clearly his mother's reaction indicated that she'd failed to understand the severity of the situation. "Excuse me," he said, hailing a ride attendant. "Excuse me?" B said again, raising his voice above the ambient noise. "Yes," said the attendant as she approached. "Excuse me," he repeated. "But the sign says that you have to be 42 to ride on this ride." The attendant glanced at the sign then back at B. "Yesss," she said, frowning a little. "Well, my mom is 45. Can she still ride?"