Problema Solution
A race course is 2.5 miles long per lap and an entire race will consist of 200 laps. Racer Bob finishes the race in 4 hours. If racer Bob is 1.25 times faster than racer Tom then, how long did it take for racer Tom to finish?
Answer provided by our tutors
The total length of the race is d = 2.5 * 200 = 500 miles.
t1 = 4 h the time of racer Bob
t2 = the time of racer Tom
the speed = distance / time
d/t1 = 1.25*(d/t2)
500 / 4 = 1.25*(500/t2)
t2 = 0.3125 h = 18 min 45 sec
Tome finished the race in 18 min and 45 seconds.