A census is where you poll everybody; a sample is where you choose a group of people to poll. Taking a census is inefficient because you can get almost completely accurate information from a large sample, but a sample would take significantly less time than a census since you wouldn't have to poll absolutely everybody in a population.
You can say : 15% ⇒ ? if 100% ⇒ 32.50 $ so next you can say : 15/100 = ?/32.50 ⇒ ? = (15/100) × 32.50 = 15 × 32.50 ÷ 100 = 4.875 ⇒ so the answer is 4.785 $ ;D i hope this will be helpful :))
