Question

an elevator descends into a mine shaft at a rate of 5 m/minute. if the descend start from 20 m above the ground level. how long will it take to reach 260 m.​

Answer 1

Answer:

Elevator descends at speed 5m/min.

Let's keep 260 m as a negative integer.

$20 - ( - 260) = 20 + 260 = 280$

Then,

280÷5 =56m

The elevator takes 56 minutes.

Explanation:

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