a person on a moving sidewalk travels 21 feet in 7 seconds the moving sidewalk has the length of 108 feet how long will it take to move from one end of the sidewalk to the other
7/21 = x/108
Cross multiply and solve for x.
or
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To determine how long it will take to move from one end of the sidewalk to the other, we need to first calculate the speed of the person on the moving sidewalk.
The person traveled 21 feet in 7 seconds, so we can calculate their speed by dividing the distance traveled by the time taken:
Speed = Distance / Time
Speed = 21 feet / 7 seconds
Speed = 3 feet per second
Now that we know the person's speed, we can determine how long it will take to travel the entire length of the sidewalk.
The length of the sidewalk is given as 108 feet. Therefore, the time taken to travel the entire length of the sidewalk will be:
Time = Distance / Speed
Time = 108 feet / 3 feet per second
Time = 36 seconds
Therefore, it will take 36 seconds to move from one end of the sidewalk to the other.