Question

Can someone please help me solve this

Answer 1

Here's a little known but very useful factoid:

If they're inversely proportional,
then their product is constant.

Here's how to use it:

-- We're told that Y = 8 when X = 7.
So when y=8 and x=7, their product is 56 .

-- If Y REALLY varies inversely as X, then
their product is ALWAYS going to be 56.

-- So when Y=4, X= (56/4) = 14 .