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

x =kt/y

12 = 10k/25
275 =10k
k = 27.5

6 = 3(27.5)/y

y = 3(27.5)/6
y = 13.75