Jada and lin are comparing inches and feet.
Let I denote inches and F denote feet.
It is given that
I =k F or F=m I
So, I/F=k or m=F/I
As we know 1 feet = 12 inches
constant of proportionality i.e k=1/12
In case 2, constant of proportionality=12/1=12
So, Jada must have calculated ratio of feet to inches while Lin has calculated the ratio of inches to feet.
