Let's see. I'm not sure if you meant 80% (.8) or .80% (.008), so let's just solve the problem using what you've stated (.80%)We could make that sentence into an equation:x * .80% = $24.That would equal to:x = $24 / .008With simple mathematics, we can find that:x = $3,000.Now if you meant 80%, the answer would come to $30, instead of the $3,000.