Question

Two students are preparing for a marathon. Hector ran 8 miles in 85 minutes. Mario ran 6 miles in 55 minutes. Who has the faster average speed?

Answer 1

Since v=d/t
We can change the times from minutes to hours so that the answers will be in mph (but it isn't necessary)
Hectors speed=8/1.42=5.6mph
Marios speed=6/0.92=6.5mph
Therefore mario has the greater average speed.
Hope this helps :-)

Answer 2

`formula\ for\ average\ speed= (distance)/(time)\\\\ Hector:\\\\ v_H=(8miles)/(85\ minutes)\approx0,09(mile)/(min)\\\\ Mario:\\\\ v_M=(6miles)/(55minutes)=0,1(miles)/(min)\\\\ Mario\ has\ faster\ speed.`