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An escalator is moving downward at a constant speed. Andrea walks down the escalator as it is moving down, and walks down 50 steps by the time she reaches the bottom. Marty runs down the escalator as it is moving down, and runs down 90 steps by the time he reaches the bottom. Marty does this in the same time that Andrea takes to walk down 10 steps. How many steps are visible when the escalator is not moving? Note: Andrea walks down the steps at a constant speed. Also, Marty runs down the steps at a constant speed as well.

An escalator is moving downward at a constant speed. Andrea walks down the escalator as it is moving down, and walks down 50 steps by the time she reaches the bottom. Marty runs down the escalator as it is moving down, and runs down 90 steps by the time he reaches the bottom. Marty does this in the same time that Andrea takes to walk down 10 steps. How many steps are visible when the escalator is not moving? Note: Andrea walks down the steps at a constant speed. Also, Marty runs down the steps at a constant speed as well.

Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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An escalator is moving downward at a constant speed. Andrea walks down the escalator as it is moving down, and walks down 50 steps by the time she reaches the bottom. Marty runs down the escalator as it is moving down, and runs down 90 steps by the time he reaches the bottom. Marty does this in the same time that Andrea takes to walk down 10 steps. How many steps are visible when the escalator is not moving? Note: Andrea walks down the steps at a constant speed. Also, Marty runs down the steps at a constant speed as well.
Transcribed Image Text:An escalator is moving downward at a constant speed. Andrea walks down the escalator as it is moving down, and walks down 50 steps by the time she reaches the bottom. Marty runs down the escalator as it is moving down, and runs down 90 steps by the time he reaches the bottom. Marty does this in the same time that Andrea takes to walk down 10 steps. How many steps are visible when the escalator is not moving? Note: Andrea walks down the steps at a constant speed. Also, Marty runs down the steps at a constant speed as well.
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