Question

if x varies inversely as y and X=20 when y=600 find y when X=400​

Answer 1

Answer:

If x varies inversely with y

xy=k (constant) (i)

If x=20 and y=600

Xy=20×600=12000

k=12000

When x=400 then from equation (i)

y×400=k

y×400=12000

y=

400

12000

=30