A jogger ran 7 miles, decreased her speed by 1 mile per hour, and then ran another 8 miles. If her total jogging time was 3 2/5 hours, find her speed for each part of her run.

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)