16 (a) Dwayne buys a camera for $90. He sells the camera for $126. Calculate his percentage profit. (b) The price of a computer was $375. In a sale, the price was reduced by 15%. Calculate the reduction in the price of the computer. (c) The exchange rate between euros and dollars is €1 = $1.25 . (i) Convert €180 to dollars. (ii) Convert $500 to euros.