Increase and Decrease Percent
To calculate percentage of increase and decrease we need to use this formulas Increase % = Actual increase x 100
Decrease % = Actual decrease x 100
Example 1. The price of a tablet was ₹22,000 last year. If there is a decrease of 10 %. What is the price of the tablet this year ?
Solution : Price of tablet last year = ₹22,000
Actual decrease = 10 % of ₹22,000
= ₹ 10
Price of the tablet this year = ₹(22,000 - 2200) = ₹19,800
Example 2. The population of city increases every year by 10 %. If the Population in the year 2018 is 1,18,800. What was the population in the 2017.
Solution :- Let the population in the year 2017 be 100
Therefore, 2018 population = 100 + 10 = 110
|Population ||in 2018 ||2017 |
|Assumed ||110 ||100 |
|Actual ||118800 ||x |
Now we will do cross multiplication
105 x = 118800 x 100
x = 118800 x 100
Ans. The population of the city in the year 2017 is 1,08,000. Profit and Loss
First, for finding the profit and loss, we need to learn this definitions. ►Cost Price- It is the price at which an article is purchased. It is denoted by CP. ►Selling Price- It is the price at which an article is sold. It is denoted by SP
Now, we are ready for learning what is Profit. ►Profit- If the Selling Price (SP) is more than the Cost price (CP), then the seller earns a gain or a profit.
Now, we are ready for learning what is Loss. ►Loss- If the Cost Price (CP) is more than the Selling price (SP), then the seller suffers a loss.
Profit and Loss Sums
Before, we start solving the sums, we have to learn the formulas which are useful in these types of sums. Profit % = Profit x 100
Loss % = Loss x 100
SP = 100+Profit
SP = 100-Loss
CP 100 Marketed Price and Discount
In every shops, every article which is to be sold has a price written on it. This price which is tagged to it or marked on it is called the marked price. It is denoted by MP.
Discount is always expressed as a percent of the marked price.
Sales Price - Market Price Relationship Sale Price = MP - Discount Discount % = Discount x 100
MP Goods and Service Tax (GST)
Goods and Service Tax (GST) is a destination based tax on comsumption of goods and service. It has replaced sales tax and VAT. Simple Interset
In Simple Interset, the interset on a given amount remains the same every year. In other words, the depositor will earn the same amount of interest every year during the money deposit period. Simple Interest = P x R x T
100 Where P is Principal, R is Rate and T is Time.