Arthur D. answered • 03/24/16

Tutor

4.9
(124)
Forty Year Educator: Classroom, Summer School, Substitute, Tutor

distance=rate*time

d=r*t

d=(15)(t) for Sean

d=(20)(t-8/60) for Madison (8 minutes is 8/60 of an hour)

set the two right sides equal to each other because they both equal d

(15)(t)=(20)(t-2/15)

15t=20t-40/15

20t-15t=40/15

5t=40/15

multiply both sides by 1/5

t=(1/5)(40/15)

t=8/15 of an hour

d=(15)(t)

d=(15)(8/15)

d=8 miles long is the bike trail