Question

The distance above the ground is represented by positive integers and the distance below the ground by negative integers. An elevator begins to descend from 15 m above the ground at a rate of 5 m per minute. What will its position after 45 minutes?
A. 210 m
B. -210 m
C. 225 m
D. -225 m
write the answer briefly
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Answer 1

Answer:

CRM

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Answer 2

Answer:

-225m

Step-by-step explanation:

STEP 1 : 5m = 1 minute

15m = 15/5

      = 3 minutes

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STEP 2 : 3 minutes = 15m

              45 minutes = 45 × 15 /3

              45 minutes = 225m

As she is starting from 15m above the ground, obviously ends up below the ground.

Answer : -225m

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