For this case we have the following expression:

We have to:

Rewriting the expression and simplifying we have:

Answer:

75/100 = 0.75
--------------------
12 x 0.75 = 9
* The mine elevator travels a
distance of 9 metres per minute.
---------------------
After 2 minutes, the mine elevator
would've travelled 18 metres,
therefore your answer is:
A: -18 metres
So you would use the equation y=mx+b
Answer: 
Step-by-step explanation:
Here x represents the time taken by Kiran in reading (in minutes) and y represents the time taken by Andrew in reading (in minutes).
According to the question,
Andre read for 5/8 more than kiran.
Thus, The time taken by Andrew(in minutes) = time taken by kiran + 5/8 of time taken by kiran
= 
= 
= 
= 
Thus, required equation,
