Question

If x varies inversely as y and directly as t, and x = 12 when t = 10 and y = 25, find y when x is 6 and t = 3.

Answer 1

given x=c t/y for some constant c
also
12 = c 10/25
you need to solve for y from :
6= c 3/y
easier now?

Answer 2

no its not an answer choice

Answer 3

given x=c t/y for some constant c
also
12 = c 10/25
you need to solve this for c :
c=25*12/10=30
so the equation is:
x=30 t/y
now substitute the values of x and t to find corresponding y:
6=30*3/y
y=90/6=15

Answer 4

well even if you didnt want to solve for c,, you can simply divide the 2 eqns..

Answer 5

got it?

Answer 6

thanks myko

Answer 7

yw