1. Questions

Math- Multi-step word problems

A plane traveling from Phoenix to Washington, D.C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes. What is the average speed of the plane in calm conditions?
600 miles/hour
620 miles/hour
650 miles/hour
700 miles/hour

  1. 👍
  2. 👎
  3. 👁
Kitty

  1. 620 miles/hour

    1. 👍
    2. 👎
    Kitty

  2. 3(s+20) = 3.20(s-20)
    s = 620
    3*640 = 1920
    3840/(3 + 3.20) = 619.35

    so you are correct

    1. 👍
    2. 👎
    Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the altitude of the plane, is from the southwest and has a velocity of 60 miles per hour. What is the true

  2. Algebra Readiness

    Write and solve inequality. 17. The speed limit of a highway is 55 miles per hour. A car is traveling at least 65 miles per hour. How many miles per hour m over the speed limit is the cart traveling? (Every time I put one of these

  3. math 11th grade

    If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?

  4. AP CALC

    Two roads intersect at right angles. At a certain moment, one bicyclist is 8 miles due NORTH of the intersection traveling TOWARDS the intersection at a rate of 16 miles/hour. A second bicyclist is 10 miles due WEST of the

  1. 8th grade math

    One of your friends is heading north for the Christmas holiday and the other friend is heading south. If when they start, they are 1029 miles apart and one car is traveling at 53 miles per hour, and the other 45 miles per hour,

  2. Math

    Write a unit rate for the situation. Round to the nearest hundredth if necessary. traveling 426 miles in 7 hours (1 point) A.85.2 miles B.hour71 miles C.hour0.0426 miles D.hour60.86 miles/hour

  3. Trigonometry

    Two ships leave a harbor entrance at the same time. The first ship is traveling at a constant 10 miles per hour, while the second is traveling at a constant 22 miles per hour. If the angle between their courses is 100°, how far

  4. Math

    A car averaged 48 miles per hour traveling 672 miles from Washington to Orlando. How long was the trip? ___ hours ?????

  1. math

    A car averaged 48 miles per hour traveling 672 miles from Washington to Orlando. How long was the trip?

  2. Calculus

    Suppose that two boats leave a dock at different times. One heads due north, the other due east. Find the rate at which the distance between the boats is changing when the first boat is 56 miles from the dock traveling at a speed

  3. Algebra

    Two trains leave Raleigh at the same time, one traveling north, the other south. The first train travels at 50 miles per hour and second at 60 miles per hour. In how many hours will the trains be 275 miles apart?

  4. math

    one of your friends is heading north for a holiday and the other is heading south . If their destinations arre 1029 miles apart and one car is traveling at 45 miles per hour and the other is traveling at 53 miles per hour . How

You can view more similar questions or ask a new question.