QUESTION BAISED ON HCM & LCM-DISCOUNT FORMULA

Discount Formula
For any competitive exam such as IBPS, SBI, CAT, SSC CGL and others, Discount Formula plays a significant role in them and as well as in our daily life. We have stated Important Discount Formula for the easiness of the candidates. We all have read the Discount Formula In Maths and many aspirants may be still studying it, so with the help of formula you can easily Calculate Discount Percentage. To make the concept of Discount more Clear and remove all the confusion we have also furnished some examples.
1.Formula of discount
Discount=List Price – Selling Price Discount=List Price−Selling Price
Selling Price=List Price−Discount Selling Price=List Price−Discount
List Price=Selling Price + Discount List Price=Selling Price + Discount
2.Discount Persantage Formula
rate of discount=Discount% = Discount /listprice*100
selling price = list price * (100-discount%)/100
list price = selling price * 100 /(100-discount%)
4.Successive Discount Formula
Successive discount can be simply defined as discount on a discount.
Case 1: If there are two discounts:
Total discount = (x + y – xy /100)%
Case 2: If there are three discounts
Example: The marked price of a shirt is Rs.1000. A shopkeeper offers 10% discount on this shirt and then again offers 20% discount on the new price, and then and then again offers 30% discount on the new price . How much will you have to pay, finally?
Solution: As the successive discount is 10% and 20% and then again 30%.Here we will move step by step and first calculate it for only two discounts, and then whatever the result comes, again calculating it fotr the result we got and the remaining discount.
Total discount = (x + y – xy / 100) %
x = 10%, y = 20% and z = 30%
Discount rate formula
= [10 + 20 – (10 x 20) / 100] % = (30 – 200 /100) % = 28% (let us say d)
Now, d= 28 % & z = 30 %
Total discount = (d + z – dz / 100) %
Final discount = [28 + 30 – (28 x 30) / 100] % = (58 – 840 /100) % = 49.6%
Which means Discount = 49.6% of 1000 = (49.6 / 100) x 1000 Rs 496
Selling price = M.P – Discount = 1000- 496 = 504