Question

If y varies inversely with x, and y = 60 when x =3, find y when x = 18

Answer 1

y=10

Explanation:

y is inversely proportional to x or y=k. 1/x

where k = constant

or x.y =k where y=60 x=3,

3*60 =180=k

Now, when x=18;

18*y = 180 y=180/18

y=10.