The hound gains 2 feet a leap, so it closes the 150 feet in 75 leaps. By then it has run 675 feet and the hare 525.
A hare has a 150-foot start on a hound. The hound covers 9 feet with each leap and the hare covers 7, and they leap at the same time. How many leaps does the hound need to catch the hare?
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How much ground does the hound make up with each leap?
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75 leaps
Source: Alcuin of York (attributed), Propositiones ad Acuendos Juvenes, no. 26, c. 800