How do you calculate the original price of an item after you were given the discounted price? For example, I bought 3 item clothes and they were on 20% discount. I ended up paying after the discount. How can I calculate the original price of these items without the 20% discount?
I was able to answer this, however, I used trial and error until I finally got the correct answer. Is there an equation on how to solve this without doing a Trial and Error method?
#1 by nozar nazari on December 31, 2009 - 7:23 pm
Original price – 20(original price)/100=$89
0.8(original price)=$89
original price=$89/0.8=$111.25
GOOD LUCK.
#2 by Meg on December 31, 2009 - 7:23 pm
20% of x = discount
80% of x is amount u paid
80/100 * x = 89$
x= 8900/80= 111.25 $
#3 by mis42n on December 31, 2009 - 7:23 pm
what meg said. As a formula it is:
original price = (discounted price * 100)/(100 – discount)
so x = (89 *100)/(100-20) etc. etc.
#4 by Fazaldin A on December 31, 2009 - 7:23 pm
Let original price is x
Discount = 20 %
Price after discount = x – 20.x/100 = 89 USDs
x(1 – 0.2) = 89
0.8x = 89
x = 89/0.8 = 111.25 USDs
So the equation is :
price paid = original (1 – discout % / 100)
#5 by Patra on December 31, 2009 - 7:23 pm
Assumption:
All the 3 clothing items were costing the same price
Let the price of each item be S
Cost of 3 items would be 3xS
Discounted price of three items is calculated as:
3(1.00-0.20)S = $89
where 20/100 is the discount
Price of each item is
S = 89/3×0.80
$37
#6 by tiggsy on December 31, 2009 - 7:23 pm
100-20 is 80
89 is 80%
89/80 is 1%
89/80*100 is 100%
So if x is % discount and y is nett cost (what you paid):
Full price = y/(100-x)*100