Answer:
12
Step-by-step explanation:
4 1/4 inches are in 1 inch, 3 inches total would make 12.
No it is not proportional
Answer:
6 boys have brown hair.
Step-by-step explanation:
boys in the class.
boys have brown hair.
Find the difference between the 2 numbers which will give you the increase from the lower value to the higher. Divide this increase by the original (lower) number and multiply the result by 100 to get the percentage. For us that looks like this:

. Simplifying a bit we have

or 49%, rounded.