Question

If y varies jointly as x and z and y=80 when x=5 and z=8, find y when x=16 and z=2

Answer 1

y varies jointly
so y=k * xz

Answer 2

80=k *5*8

Answer 3

and jus solve for k?

Answer 4

Yeah find out the value of k first

Answer 5

okie dokie!! thanks diya!!!

Answer 6

then you've to substitute it in y= k *xz for the new value of x & z and find out y

Answer 7

yea, okay, gotcha!! thank you thank you!!!!

Answer 8

hehe :) Anytime !!