SOLUTION: Two friends live 253 miles apart. they drive toward each other to meet for a weekend. The first friend drives the speed limit and it takes her two hours to meet her friend. The sec
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Question 774060: Two friends live 253 miles apart. they drive toward each other to meet for a weekend. The first friend drives the speed limit and it takes her two hours to meet her friend. The second friend leaves 15 minutes late, so she drives 5 miles per hour over the speed limit. What was the second friends speed? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Two friends live 253 miles apart.
they drive toward each other to meet for a weekend.
The first friend drives the speed limit and it takes her two hours to meet her friend.
The second friend leaves 15 minutes late, so she drives 5 miles per hour over the speed limit.
What was the second friends speed?
:\
Let s = the speed limit
then
(s+5) = 5 mph over
:
We are dealing mph; change 15 min to .25 hrs
2nd friend traveled 2-.25 = 1.75 hrs
:
Write a dist equation, dist = time * speed
:
1st friend dist + 2nd friend dist = 253 miles
2s + 1.75(s+5)= 253
2s + 1.75s + 8.75 = 253
3.75s = 253 - 8.75
s = 244.25/3.75
s = 65.13 mph
I'll let you find the 2nd friend's speed
