The number of steps she have to take in either direction is
Further explanation:
The formula of the speed can be expressed as follows,
The formula of the time can be expressed as follows,
Given:
If a girl is going up then the numbers of steps she counts are 60.
If a girl is going down then the numbers of steps she counts are 90.
Explanation:
Consider the speed of the girls be “x”.
Consider the speed of the escalator be “y”.
Consider the distance between the ground and the floor will be “d”.
If a girl is going upward then the speed will be
…… (1)
If a girl is going downward then the speed will be
…… (2)
Now add both the equations.
The time in steps can be calculated as follows,
The number of steps she have to take in either direction is
Learn more:
1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.
2. Learn more about equation of circle brainly.com/question/1506955.
3. Learn more about range and domain of the function brainly.com/question/3412497
Answer details:
Grade: High School
Subject: Mathematics
Chapter: Number system
Keywords: Girl, count, steps, moving escalator, going up, 60 steps, same time, direction, standing still, walking down.