36 is the answer. Mary Joan Mankaa If purchasing an item, you would take 36 which is the percentage amount and deduct it from 90. This will give you 54, which is the amount paid for the purchase.
To take 40% off a price, you can either find 40% of the original price and subtract it, or directly find the remaining 60% by multiplying the original price by 0.60 (or 0.40 and subtract) to get the final price. For example, for a $100 item, multiply $100 by 0.40 to get $40 off, or $100 by 0.60 to get the final price of $60.
To calculate 40 percent of a number, you can multiply the number by 0.40 (which is the decimal equivalent of 40%). The result will be 40% of the original number.