I know this is super late but I want to help others who struggle on this.
Answer:
Multiply 3 1/4 × 2, and then add 1/2.
This method does NOT give the correct number of inches.
The length of Mathew's hair after 2 months will be 4 1/4 inches.
The ratio is defined as the comparison of one number with another. Or defining that the one number is how many times the other number.
Now it is given that Justin's hair is 3 1/4 inches it grows 1/2 inch each month
So the growth of Mathew's hair after two months will be calculated as:-
=3 1/4 + 2*1/2
=3 1/4 + 1
=4 1/4 inches
Hence the length of Mathew's hair after 2 months will be 4 1/4 inches.
To know more about ratios follow
https://brainly.com/question/2328454
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