+0  
 
0
103
1
avatar

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 30 miles per hour instead, then I would have arrived \(28\) minutes later. How many miles did I drive?

 Mar 5, 2022
 #1
avatar+36433 
+1

d = distance    rate * time

 

40x = d      and    30 (x + 28/60)  = d      equate the two       ( x = time in hours)

 

40x = 30x - 14

10x= 14

x = 1.4    hours                   40 * 1.4 hours = 56 miles

 Mar 5, 2022

11 Online Users

avatar
avatar