SOLUTION: kristin left the white house and traveled south at an average speed of 55 mph. shreya left some time later traveling in the opposite direction with an average speed of 70 mph after

Question 614806: kristin left the white house and traveled south at an average speed of 55 mph. shreya left some time later traveling in the opposite direction with an average speed of 70 mph after kristin had traveld for four hours they were 500 mi. apart. find the number of hours shreya traveled
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
kristin left the white house and traveled south at an average speed of 55 mph. shreya left some time later traveling in the opposite direction with an average speed of 70 mph after kristin had traveld for four hours they were 500 mi. apart. find the number of hours shreya traveled
.
Apply the distance formula of d=rt
.
Let t = time (hours) shreya traveled
then
70t + 4(55) = 500
70t + 220 = 500
70t = 280
t = 4 hours

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