The correct proportion that the student should write for mowing 12 lawns is 15 hours or 12:15.
What is a proportion?
A proportion is an equation in which two ratios are set equal to each other.
Proportions show the numerical relationships of variables. They are expressed as ratios, fractions, percentages, or decimals.
Data and Calculations:
If in 6.25 hours, 5 lawns were mowed, then to mow 1 lawn takes 1.25 hours (6.25/5).
To mow 12 lawns, x hours will be used.
x = 15 hours (6.25/5 x 12) or 1.25 x 12
Proportions:
A = 5:625
B = 12:15
Constant proportionality = 1: 1.25
Thus, the correct proportion for mowing 12 lawns is 15 hours or 12:15.
Learn more about proportions at https://brainly.com/question/870035
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