Answer:
Hence, The time of a commercial plane ride at this rate is:
280 Minutes or (4 hours and 40 minutes)
First Step-by-step explanation:
Let the speed of the commercial Airplane be
X km/min
The speed of the jet plane is
2x km/min
Multiply both the left & Right sides of the equation by 2x:
1730 / x - 1730 / (2x) = 140
1730 * 2 - 1730 = 140 * 2x
1730 = 280x
x = 1730 / 280
x = 173 / 28
1730 / 173 /28 = 280 (min)
Hence, the time of a commercial plane ride at this rate is:
280 (minutes).
Second Step by Step explanation:
Make a plan:
- In this question, we need to set an unknown number to solve this problem. We set the speed of a commercial airplane as:
x km/h.
- Then we can get the speed of a jet plane is
2x km/h.
time = distance/speed
- to calculate the time of the two planes. Then we can get an equation to solve the problem.
Solve the problem:
- We set the speed of a commercial airplane as
x km/h
- Then we can get the speed of a jet plane is
2x km/h
1730/2x - 1730/x = 7/3 (using the ground truth)
- By solving the above equation, we can get:
x = 346 km/h (using the ground truth)
- The time of a jet plane is:
1730/2 * 346 = 5/2 hours (using the ground truth)
- The time of a commercial airplane is:
1730/346 + 140/60 - 5/2 = 5 hours
The time of a commercial plane ride on this route is Five (5) hours.
Hope this helps!