y=-2.08
bring the 4.58 over to the other side of the equation and solve 2.5-4.58
His brother jogged more by 1 1/10 kilometers.
Answer:
D
Step-by-step explanation:

Length - l
Width - w
Given,
Perimeter = 60
2(l +w) = 60
l + w = 30
l = 30 - w
Given,
l = 3w
30 - w = 3w
4w = 30
--- w = 7.5
--- l = 3w = 3 * 7.5 = 29.5
Hence, the length of the rectangle is 29.5 and the width is 7.5
The answer is... A hope this helps