Answer:

Step-by-step explanation:
Given

Required
Solve for A
The question implies that we make A the subject of the formula.
Start by subtracting By from both sides of the equation by x


Divide both sides by x


<em>Solved</em>
Answer:
Given speed of trolley = 125 meters per minute

Now we know that
Distance= Speed x time
Thus for the first case since the time of travel is less than 450 seconds thus the distance traveled is less than
Distance < 2.083 x 450 =937.5 meters
hence depending on the given information we cannot come to any conclusion weather the distance travelled is less than 800 m or greater than 800 m.
For the second case
since the time of travel is greater than 400 seconds
Thus the distance traveled is

which is greater than 800 meters.
2 kilos is 1000 times more