A building is 'x' meters tall and has an elevator which goes
from the ground floor to the terrace of the building.
Currently, it is at the 4th floor which is at a height of 20 m from the ground. From there, it goes to the terrace and then goes back to the ground floor.
Which of the following expressions represents the TOTAL distance covered by the elevator, in metres?
A. (2x-4)
B. (2x-20)
c. (2x+20)
D. (2x-40)
Dear Student,
Please find below the solution to the asked query:
Given : A building is ' x ' meters tall and has an elevator which goes from the ground floor to the terrace of the building.
And
Currently, it is at the 4th floor which is at a height of 20 m from the ground. From there, it goes to the terrace , So
Distance cover by lift from 4th floor to terrace = ( x - 20 ) meters
And then lift goes back to the ground floor. , So
Distance cover by lift from terrace to ground floor = x meters
Therefore,
Total distance covered by the elevator = x - 20 + x = ( 2 x - 20 ) meters
So,
Option ( B ) ( Ans )
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards
Please find below the solution to the asked query:
Given : A building is ' x ' meters tall and has an elevator which goes from the ground floor to the terrace of the building.
And
Currently, it is at the 4th floor which is at a height of 20 m from the ground. From there, it goes to the terrace , So
Distance cover by lift from 4th floor to terrace = ( x - 20 ) meters
And then lift goes back to the ground floor. , So
Distance cover by lift from terrace to ground floor = x meters
Therefore,
Total distance covered by the elevator = x - 20 + x = ( 2 x - 20 ) meters
So,
Option ( B ) ( Ans )
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards