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maxonik [38]
3 years ago
6

A girl wants to count the steps of a moving escalator which is going up. If she is going up on it, she counts 60 steps. If she i

s walking down, taking the same time per step, then she counts 90 steps. How many steps would she have to take in either direction, if the escalator were standing still?
Mathematics
1 answer:
Luba_88 [7]3 years ago
3 0
75. As she is going up, 15 stairs have been passed by the escalator moving. When she goes down same thing
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What is the commom difference in the following arithmetic sequence??
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answer is C
5 0
4 years ago
3 15/16 divided by 2 5/8Ask your question here
Alexeev081 [22]
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3 0
3 years ago
A ski area has a high-speed lift that can move 2,400 skiers to the top of the mountain each hour. Write an expression describing
mihalych1998 [28]

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7 0
3 years ago
How can I do this problem?
Airida [17]

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39

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4 0
3 years ago
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Ratling [72]

I got 70

Combination=n!/((n-r)!r!)

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=70 ways

3 0
3 years ago
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