You walk 2 miles in 1/2 hour. at that rate how long will it take you to walk 3 miles

First, calculate for the rate at which you walk by dividing the distance by time in the first set of given. This gives us the rate of 4 miles/hour. To determine the time it takes to walk 3 miles, divide 3 by 4 which gives us 0.75 hours or 45 minutes.