SOLUTION: Jodi and her friend Marcos decided to meet at the park since it was exactly 1 mile from each other homes. Marcos walked to the park at a constant rate of 4 miles per hour. Jodi wal

Question 815101: Jodi and her friend Marcos decided to meet at the park since it was exactly 1 mile from each other homes. Marcos walked to the park at a constant rate of 4 miles per hour. Jodi walked the first half-mile at a rate of 5 miles per hours and the second half-mile at the rate of 3 miles per hour. Both of the friends were quite surprised when they arrived at the park at exactly the same time! What was Jodi�s average speed walking to the park and which of the friends left home first?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r*t=d
4*x=1
x=1/4
Marcos took 1/4 hour
5x=1/2
x=1/10
3y=1/2
y=1/6
5x=3y
5*1/10=1/2
3*1/6=1/2
1/10+1/6=t
3/30+5/30=t
8/30=t
16/60=16 minutes

jodi left home a minute earlier than marcos
her average was
1/4/15
15/4
3.75 mph

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