SOLUTION: Richard is driving to his parents house it's 130 miles. He normally drives at 65mph but he is running late today and drives at 76 mph. How many mins does he save ?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Richard is driving to his parents house it's 130 miles. He normally drives at 65mph but he is running late today and drives at 76 mph. How many mins does he save ?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 833258: Richard is driving to his parents house it's 130 miles. He normally drives at 65mph but he is running late today and drives at 76 mph. How many mins does he save ?
Found 2 solutions by richwmiller, josmiceli:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
The trip normally takes 2 hours or 120 minutes. 2*65=130
But 130/76 *60=102.63 minutes
27.37 minutes difference if he doesn't get stopped by the police or have an accident.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+d+=+r%2At+
+t+=+d%2Fr+
+t%5B1%5D+=+130%2F65+
+t%5B1%5D+=+2+ hrs
-----------------
+t%5B2%5D+=+130%2F76+
+t%5B2%5D+=+1+%2B+54%2F76+
--------------------
+t%5B1%5D+-+t%5B2%5D+=+2+-+1+-+54%2F76+
+t%5B1%5D+-+t%5B2%5D+=+22%2F76+
+t%5B1%5D+-+t%5B2%5D+=+11%2F38+ hrs
------------------------
To convert to minutes:
( hrs ) x ( minutes / hr ) = minutes
+%2811%2F38+%29%2A%28+60%2F1+%29+=+%28+11%2A30+%29%2F19+
+330%2F19+=+17.37+
-------------------
+.37%2A60+=+22+
He saves 17 min and 22 sec