11

Oct

Open Question: please help me with this algebra problem solving?

Posted by carposter  Published in News
while training for a biathlon race, kevin covered a total distance of 9 km by swimming for 45 min and running for 20 min. the next day he swam for 30 min and ran for 40 mins, covering 14 kim, find his rates (in km/h) for swimming and running. (assume that these rates are constant.)