Question

X varies directly as y and x = 80 when y is 100 . What is y when x is 64 solve in

Answer 1

Since X is directly proportional to Y.

Then,

X=mY.

If

X=80; Y=100; Then m=8/10

If

X=64; m=8/10

Then,

Y=X/m=80.

Answer 2

Answer:

80

Step-by-step explanation:

x=my

80=m.100

=m = 8/10

if x=64

y=64/m = 64/8 X 10

then.

y= 80