SOLUTION:
Steve drove at a constant speed for 3 hours on the turnpike. He then slowed his speed by 15 miles per hour and drove for 2 hours on a secondary road. Steve covered 245 miles. Wha
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Question 729688:
Steve drove at a constant speed for 3 hours on the turnpike. He then slowed his speed by 15 miles per hour and drove for 2 hours on a secondary road. Steve covered 245 miles. What was his speed on the turnpike
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
D=RT
245=X*3+(X-15)2
245=3X+2X-30
245+30=5X
275=5X
X=275/5
X=55 MPH FOR THE TURNPIKE TRIP.
55-15=40 MPH FOR THE SECONDARY ROAD TRIP.
PROOF;
245=3*55+40*2
245=165+80
245=245
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