SOLUTION: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the

Algebra.Com
Question 1173897: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the car.
Answer by ikleyn(53765)   (Show Source): You can put this solution on YOUR website!
.

Let x = the rate of the car, in miles per hour.

Then the rate of the plane is 3x miler per hour.



The time equation is


     +  = 7 hours,

or

     +  = 7,


     = 7,


    x =  = 55.


ANSWER.  The car rate was 55 miles per hour.

Solved.



RELATED QUESTIONS

An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of... (answered by josgarithmetic)
an engineer traveled 165 miles by car and then an additional 660 miles by plane. the rate (answered by josmiceli)
A child traveled 1350 mi by jet and the an additional 135 mi by helicopter.The rate of... (answered by stanbon)
Please help me solve this, I don't understand A sales executive traveled 72 miles by... (answered by richwmiller,edjones)
an insurance representative traveled 735 mi by commercial jet and then an additional 105... (answered by stanbon)
An insurance representative traveled 1350 mi by commercial jet and then an additional 135 (answered by Alan3354,josgarithmetic)
a forest ranger traveled 1080 mi by jet and then an additional 180 mi by helicopter. the (answered by mananth)
A insurance representative traveled 532 mi by commercial jet and then an additional 95 mi (answered by mananth)
A insurance representative traveled 532 mi by commercial jet and then an additional 95 mi (answered by stanbon,MathTherapy)