In a rowing contest, Crew One travels at a rate of a five-minute mile. Crew Two achieves an 8 minute mile. If both crews set out from the same point on a large lake and row for 40 minutes, how far ahead will Crew One be from Crew Two?

Crew One would achieve 8 miles in the forty minute period. This is determined by dividing 40 by 5, which yields 8. Crew Two achieves only 5 miles since dividing 40 by 8 yields 5 as the result. The answer is obtained from subtracting the distance Crew Two achieved from the distance achieved by Crew One, or three miles.