SOLUTION: Mrs. Jones had driven for 2 hours at a constant speed when raod repairs forced him to reduce his speed by 10 mi/h for the remaining hours of the 152 mile trip. Find Mrs. Jones ori

Question 988322: Mrs. Jones had driven for 2 hours at a constant speed when raod repairs forced him to reduce his speed by 10 mi/h for the remaining hours of the 152 mile trip. Find Mrs. Jones original speed?
Found 2 solutions by solver91311, macston:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Not enough information given to solve this problem except to express the answer in terms of the original speed or the elapsed time for the slow leg of the trip.

If you made an error posting the problem and meant to include the number of hours for the slow portion of the trip, substitute that number for and solve for

John

My calculator said it, I believe it, that settles it

Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
All we know from information given is that Mrs. Jones did not finish the trip in 2 hours, so the speed was less than 152mi/2hr=76mph. And since the speed was reduced by 10mph, we know the speed was greater than 10mph.
As given, the original speed can be anywhere between 10mph and 76mph.
.
ANSWER: 10mph < original speed < 76mph

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