I think the total discount on a 40 15 5 would be 48.45% If the original cost was $100 then you would take 100 * 40% = $40 then you need to subtract the 40 from 100 = $60 times the next discount of 15% = 9, $60 - 9 = $51 then take the last 5% off this amount another $2.55, $51 - $2.55 = $48.45 is the discounted price of the item. The total percentage discount would be 51.55%.
If she paid 'e' dollars after a 20% discount, it means she paid only 80% of the original cost. To calculate the original, we divide by that. e/0.80 = 1.25e.
I always use a factor of ten. Assume no matter what the discount is it is ten percent to find a ten percent discount just move the decimal point one space to the left, then take that number and subtract it from the original cost. Then in order to find a different percent discount just multiply the ten percent discount by the percent discount you are looking for, but move the decimal one space to the left again, and subtract that from the original cost. Example: something that costs $45 is on sale for 25% off. A ten percent discount would be $4.50. Multiply that by 2.5 to get$11.50. Then subtract that from the original cost to get $33.50. P.S. often times if you don't need the exact answer it is easier to round you numbers to get rid of the .5 to make the math easier.
128%
Not necessarily. It depends on whether the 3% is based on the already discounted price or the original full price: eg original price 100, less 5% = 95. Taking 3% off this is a further 2.85 giving a new nett of 92.15. A straight 8% would leave 92 exactly...
$2000 A 20% discount means that the item is sold at 80% of the original cost. You can then calculate the original cost using the equation: 0.8 * x = $1600 where x stands for the cost of the original item. Divide both sides by 0.8 and you get x = $2000.
$54.85
$312.49 ; here's how: You have original price is 100%, final price = original price - discount amount, and discount amount = original price * discount percent.So Final price = original price - original price * discount percent = (Original price)*(100 % - discount percent).249.99 = P0 * (100%-20%) = P0 * (0.80) ---> P0 = 249.99 / 0.80 = 312.4875
For Percent Off, calculate the 60% on the original amount. This is the amount of the discount. Then subtract from the original, to get the final price. Or you can do (100% - discount%) then multiply that by the original, to get the final. So in this case: 100% - 60% = 40%. So multiply 0.40 x 82 = 32.80
If she paid 'e' dollars after a 20% discount, it means she paid only 80% of the original cost. To calculate the original, we divide by that. e/0.80 = 1.25e.
How to calculate sale price if marked price and percent discount are given:First change the percent discount to a decimal.You then multiply the percent discount in decimal form by the marked price.Finally, you subtract the answer from the multiplication problem from the marked price, and get your final answer!
I always use a factor of ten. Assume no matter what the discount is it is ten percent to find a ten percent discount just move the decimal point one space to the left, then take that number and subtract it from the original cost. Then in order to find a different percent discount just multiply the ten percent discount by the percent discount you are looking for, but move the decimal one space to the left again, and subtract that from the original cost. Example: something that costs $45 is on sale for 25% off. A ten percent discount would be $4.50. Multiply that by 2.5 to get$11.50. Then subtract that from the original cost to get $33.50. P.S. often times if you don't need the exact answer it is easier to round you numbers to get rid of the .5 to make the math easier.
34% discount
128%
Not necessarily. It depends on whether the 3% is based on the already discounted price or the original full price: eg original price 100, less 5% = 95. Taking 3% off this is a further 2.85 giving a new nett of 92.15. A straight 8% would leave 92 exactly...
$2000 A 20% discount means that the item is sold at 80% of the original cost. You can then calculate the original cost using the equation: 0.8 * x = $1600 where x stands for the cost of the original item. Divide both sides by 0.8 and you get x = $2000.
The quickest way is to multiply the full price by 0.2 That is the amount of the discount.
Paying 90% of the original price.