Question

An elevator in a mine ascends at a rate of 3 metre / minute and
descends at a rate of 5 metre


/minute. The distance above the ground level represents a positve integer
and below the ground level represents a negative integer. If eleveator is at a height of 30 metres
above the ground. Find the position of elevator
(a) When it descends for 30 minutes
(b) When it ascends for 10 minnutes
(C) Find the position of elevator when it starts from ground level and descends for 40 minutes and
after that ascends for 20 minutes.​

Answer 1

Answer:

a. -120m or 120m below the ground level

b. 60m or 60m above the ground level

c. -140m or 140m below the ground level