Question

If x varies inversely as y, and x = 11 when y = 15, find x when y = 3.
a.11/5
b.33/15
c.55

Answer 1

Refer to the attachment from Mathematica 9.

Answer 2

since x varies inversly relation will be\[x=k/y\]for the values of x=11 and y=15 we get \[k=11*15=165\]now for y=3 and k=165.we get \[x=165/3=55\]answer is option C:55