SOLUTION: Miguel walks 4 miles in 75 minutes. His rate for the first part of his walk is shown in the table below. The table below shows Time: 30 min Rate: 3 1/2 mph

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Question 548800: Miguel walks 4 miles in 75 minutes. His rate for the first part of his walk is shown in the table below. The table below shows Time: 30 min Rate: 3 1/2 mph
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
time = 1/2 hour
rate = 3 1/2 = 7/2 mph
d=r*t
1/2 * 7/2 is the distance in the first part
=7/4 miles
4-7/4 is the balance walked in the second part
9/4 miles in the second half = 45 minutes = 3/4
rate = d/t
rate = (9/4) / (3/4)
=9/4 * 4/3
=3 mph in the second part