Let x represent number of hours after noon.
We have been given that Sara starts at noon and walks at a speed of 4 miles per hour. So distance covered by Sara in x hours would be .
We are also told that Eddie leaves the same place an hour later. This means that Sara will be 4 miles ahead of Eddie as Sara will travel 4 miles in 1 hour.
As Eddie walks in the same direction at a speed of 5 miles per hour. So distance covered by Eddie in x hours would be .
Total distance covered by Sara when Eddie will start would be .
Now we will equate distance covered by both in x hours as:
Let us solve for x.
Since x represents number of hours after noon, so 4 represents 4 hours after noon.
Therefore, Eddie will catch up with Sara at 4:00 pm and option D is the correct choice.
9x-3x-5-3=2x-12
12x -8 =2x-12
-2x. -2x
10x. -8. =-12
+8. +8
10x. = -4
X = -0.4
When distributing the negative three into the parentheses, that canceled out the -5 and made it a positive 15
It easy you just add all the numbers all together
If you divide 2.25 by 5 it is .45 then you do .45 times 8 then it equals 3.60.
so the answer is 3.60