75% of medicine this person took, you do that by doing 420/560 and you get .75. Then you move the decimal over twice since it asks for a percent and you get 75%
Remark The trick to this question is realizing what you took 1/3 of. Did you take it of the 150000 or is it 1/3 of some total you have to find. I don't think you could come up with a third choice.
It turns out that the answer is 1/3 of a number you don't know.
Equation (1/3) x = 150000 Multiply both sides by 3 3*(1/3) x = 150000 * 3 x = 150000 * 3 x = 450000
Conclusion The amount the company makes is 450000 dollars / year.
