SOLUTION: A car traveled 1800 mi at a certain speed. If the speed had been 12 mph faster, the trip could have been made in 5 hours less. Find the speed.

Algebra.Com
Question 1000197: A car traveled 1800 mi at a certain speed. If the speed had been 12 mph faster, the trip could have been made in 5 hours less. Find the speed.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
RT=D basic uniform travel rates rule;

, really this is two equations.

(1) Do you understand that combination equality?
(2) Can you solve the problem using it?
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

A car traveled 1800 mi at a certain speed. If the speed had been 12 mph faster, the trip could have been made in 5 hours less. Find the speed.
Let speed be S

Then hypothetical speed = S + 12

We then get the following TIME equation: 

Solve for S to get a speed of  mph 

RELATED QUESTIONS


a car traveled 1350 mi at a certain speed. if the speed had been 9 mph faster, the trip... (answered by josgarithmetic)

A car traveled 1950 mi at a certain speed.  If the speed had been 13 mph faster, the trip  (answered by josgarithmetic,ikleyn)

A car traveled 960 miles at a certain speed. If the speed had been 12 mph faster, the... (answered by ankor@dixie-net.com)

A car traveled 1650 miles at a certain speed.  If the speed had been 11 MPH faster, the... (answered by josgarithmetic,josmiceli,MathTherapy)

A car traveled 3276 mi at a certain speed.  If the speed had been 13 mph faster, the trip  (answered by mananth)

A car traveled 468 mi at a certain speed. If the speed had been 13 mph faster, the trip... (answered by stanbon)

a car traveled 4032 mi at a certain speed. if the speed had been 16 mph faster, the trip... (answered by lwsshak3,mananth)

A car traveled 1280 miles at a certain speed. If the speed had been 16 mph faster, the... (answered by stanbon)

A car traveled 1500mi at a certain speed. If the speed had been 10mph faster, the trip... (answered by josgarithmetic)