The answer is B)5 2/5
Explain
n= (2 1/4)/x=(1 1/2)/(3 3/5) we should change is to easy fraction
(9/4)/x=(3/2)/(18/5)
(9/4)=2.25
(3/2)=1.5.
(18/5)=3.6
Substitute those fraction number with decimal number that makes easy to calculate
2.25/x=1.5/3.6 now we should do cross multiple
That means 2.25*3.6=8.1
1.5*x= 1.5x
8.1=1.5x divide both side with 1/5
X=5.4
Back to the choice
B, 5 2/5
First multiply 5*5 then add 2 === 27/5
27/5=5.4
So the answer is B
