Lee's fifth grade class has 1.4 times as many students as fred's. if there are total of 60 students, how many students does fred clas have? how many students does lee's class have

L = Lee's class amount
F = Fred's class amount

we know the total of students for both classrooms is 60,
thus, L, whatever that is, plus F, whatever that may be, is 60,
or
L + F = 60

now, we also now, whatever Fred's class is, Lee's class is 1.4
times bigger
since Fred's class is F in size, Lee's is 1.4 * F then, or 1.4F


solve for F

what's Lee's class? well, 1.4F

It is going to be the third choice

the image of (6, 9) under a dilation is (4, 6). the scale factor is

b. 2/3