Math

posted by .

Mike drove to a friends house at a rate of 40 mph he returned by the same route at 45 mph The driving time round trip was 4 hours. write and solve an equation to find the distance Mike traveled

  • Math -

    since time = distance/speed,

    d/40 + d/45 = 4
    d = 84.7 miles
    round trip = 169.4 miles

    check:
    84.7/40 = 2.118
    84.7/45 = 1.882
    total: 4.000 hours

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Help...More Math Help!!!...Please!

    A kayaker paddled 2 hours with a 6 mph current in a river. The return trip against the same current took 3 hours. Find the speed the kayaker would make in still water. The speed is 6 mph slower going upstream and 6 mph faster going …
  2. math

    Mike makees the following table of the distances he travels during the first day of the trip. A suppose Mike continues riding at this rate. Write an equation for the distance mike travles after t hours. B sketch a graph of the equation. …
  3. Math

    Mary drove from Amity to Belleville at a speed of 50 mph. On the way back, she drove at 60 mph. The total trip took 4 2/5 hours of driving time. Find the distance between these two cities. Any help would be greatly appreciated! =]
  4. Algebra II

    Bill drove from Ajax to Bixby at an average speed of 50 mph. On the way back he drove at 60 mph. The total trip took 42/5 hours of driving time. Find the distance between the two cities.
  5. physical science

    Mike jogs east at a rate of 4 mph. The wind is blowing west at 1 mph. What is Mike's velocity?
  6. Algebra1

    1. A bicycle racer covers a 75 mile training route to prepare for an upcoming race. If the racer could increase his speed by 5 mph, he would complete the same course in 3/4 of the time. Find his average rate of speed. 2. Nina drove …
  7. Algebra

    Tom went on a 3 Day road trip in which he drove the same number of miles each day. He drove 42 mph the first day. He drove 48 mph the second day. On the last day he drove a x mph. His average speed for the whole trip was 47 mph. Find …
  8. Math

    Gary took a drive down to the beach and drove at a pace of 45 mph on the way there. The trip took him 3 hours. He drives the exact same route on the way back, but takes it slow so he can enjoy the sunset. If Gary's return trip took …
  9. Math

    On Wednesday you drove from home to work at 50 mph and got there in 43 minutes.  On Thursday you drove at 68 mph.  Round answers to nearest 10th.  Use:  R 1 T 1 = R 2 T 2   (double click this to see clearer) Round to the nearest …
  10. Math

    On Wednesday you drove from home to work at 60 mph and got there in 23 minutes.  On Thursday you drove at 69 mph.  Round answers to nearest 10th.  Use:  R 1 T 1 = R 2 T 2   (double click this to see clearer) Round answer to the …

More Similar Questions