Problems – Solutions – Profit and Loss – Formulas Important Facts The cost price is the price at which a product orservice is purchased by seller. The selling price is the price at which a product or service is sold to the buyer. When the selling price (SP) is greater than cost price(CP) […]
Read More →Interior & Exterior angle of a polygon In this lesson we will learn the, (1) Solutions of problems on interior and exterior angles of a polygon. Example 1: Find the sum of all interior angles in a regular triangle (3-sided). Solution: Step 1: Write the formula Sum of interior angles of a polygon = (n-2) […]
Read More →Worksheet – Solving Equation Solve the below equations 1. 2x + 6 = 4x – 8 2. 7x + 3 = x + 63 3. 3x + 75 = 8x + 15 4. 12x – 18 = 10x + 8 5. x + 9 = 7x – 18 Answer of the worksheet 1. 7 2. 10 3. 12 […]
Read More →Complement of a Set Definition: The complement of a set A, is set of all elements of universal set, which are not the elements of A. Let U be the Universal set and A is subset of U, then the “Complement of A” is set of all elements of U which are not the elements of A. […]
Read More →Converse of Pythagorean Theorem In this section we are going to see the converse of Pythagorean theorem. We know the Pythagorean theorem applies to right triangles and states that, The square of the length of the hypotenuse, equals the sum of the squares of the lengths of the other two sides. (hypotenuse)2 = (Base)2+(Perpendicular)2 […]
Read More →Simple Interest Word Problems Example 1: What is the simple interest and amount of $ 2000 at the rate of 8% per year for 2 1/2 years. Solution: Principal amount = P = $ 2000 Rate of interest per year = R = 8% Time for which it is borrowed = T = 2 1/2 year Thus, simple […]
Read More →Problems and Solutions Percentage wise distribution of players who play four different games are given in below pie graph and total number of players are 1200. Example1: What is the total number of players who play cricket and rugby? Solution: Total number of players are 1200, Percentage of players who play cricket = 12% Percentage of players who play rugby […]
Read More →Convert Decimal into Percentage To converting decimal into percentage, simply multiply by 100 and add percent sign %. Example: convert 0.45 into percent. Solution: to convert 0.45 into percent we multiply o.45 by 100, we get 0.45 x 100 […]
Read More →Bar Graph Problems and Solutions Example: (1) Favourite colour of 200 students of a class are given in the below table. Answer the following questions with the help of the bar graph. (1) Which is the most preferred colour and which is the least preferred?(2) How many students preferred red colour? Solution: First we choose a suitable […]
Read More →Percentage – Solved Examples Example 1: A local cricket team played 300 one day matches in a year and won 25% of them. How many matches did they win in a year? Solution: Given that, Number of matches played by cricket team = 300 Percentage of won matches = 25% total matches won […]
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