On a tractor, the diameter of the large tire is 5 feet and the diameter of the small tire is 3 feet 9 inches. A toy tractor is made to scale from the actual tractor. On the toy tractor, the diameter of the large tire is 8 inches
What is the diameter in inches of the small tire on the toy tractor?

small tire on the toy model= 6 inches

convert 5 feet to inches

5ft= 60in

proportion of the big tires is 60:8 or 15:2

the small tire on the toy model is unknown but the small tires on the actual model is 3ft and 9 in

convert that to inches as well

3ft and 9in= 45 inches

45÷15= 3 (this is to see how many times the x (15) increases so that we can equally increase the y value

3x2= 6

hope this helped!

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.