Answer :
The percentage of 10×10 grid that is shared is 75%.
The percentage will be calculated by the formula-
Percentage = shaded number of boxes ÷ total number of boxes × 100
So, unshaded number of boxes = 25
Shaded number of boxes = 100 - 25
Performing subtraction on Right Hand Side of the equation
Shaded number of boxes = 75
Keep the values in formula to find the percentages -
Percentage = 75/100 × 100
Cancelling 100 in numerator and denominator as common in both
Percentage = 75%
Thus, the percentage of shaded grid is 75%.
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