Problem:
A truck travels 6bβ feet every t seconds. There are 3 feet in a yard. How many yards does the truck travel in 3 minutes?
Answer Choices:
A. 1080tbβ 
B. b30tβ 
C. t30bβ 
D. b10tβ 
E. t10bβ 
Solution:
The truck travels for 3β
60=180 seconds, at a rate of 6tbββ
31β yards per second. Hence the truck travels 180β
6tbββ
31β=(E)t10bββ yards.
The problems on this page are the property of the MAA's American Mathematics Competitions