Question

On a​ Saturday, Ellen and Carin agree to leave their homes at the same​ time, drive toward each​ other, and have lunch when they meet. They both drive for 2 hours. Carin drives 5 miles per hour faster than Ellen. Ellen drives a total of 80 miles. How fast does each person​ drive? Use the equation d=rt.

Answer 1

Since Ellen drove a total of 80 miles, and for 2 hours.
Her speed is =  80/2  =  40 miles/hour

So  Ellen drove for 40 miles/hour.

Since Carin drove 5 miles per hour faster than Ellen, the he drove = (40 + 5) = 45 miles/hour.

So Ellen drove 40 miles/hour and Carin drove 45 miles/hour