Answer :
The equation that can be used to find the length of the side of the original square is 4(x+5) = 60. Option A. is the answer
How to determine which equation can be used to find the length of the side of the original square?
Given that:
When the length of a side of a square is increased by 5, the perimeter of the new square is 60.
Let x represent the length of the side of the original square
when x is increased by 5, you have (x+5)
Perimeter (P) = 4 × length of the side
Thus, 4(x+5) = 60
Therefore, the equation to find the length of the side is 4(x+5) = 60
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