If X varies inversely with Y and X=8 when Y= 10, find Y when X=6

Question

Answer choices are

A: y= 3/20

B: y= 4.8

C: y= 7.5

D: y= 40/3

Answer 1

Inversely means they're on opposite sides of the fraction (meaning one is the numerator, one is the denominator). So:

8/10 = 6/Y
8Y = 60
Y = 60/8 = 7.5

The answer is C.

Answer 2

Anonymous:
Your answer is INCORRECT.
The correct formula is:
k=xy
k= 8*10
k=80
y=80/x
y=80/6
simplify the fraction to y=40/3.
I am a homeschool teacher.