Subject: Mathematics
Book: Maths Mastery
Percentages are central to countless real-world applications—from calculating exam marks to determining discounts and interest rates. The general formula to find a percentage is: (Part / Whole) × 100%. However, if you already know the rate and the whole, use Percentage of a Number = (Rate ÷ 100) × Whole. For example, to calculate 20% of 150, convert 20% to 0.20, then multiply: 0.20 × 150 = 30. This concept is pivotal in areas like finance and data analysis, so practice by computing percentages for tips in restaurants, taxes on shopping bills, or proportionate contributions in group projects. Mastering this skill builds a strong foundation for advanced percentage operations such as percentage increase, decrease, and compound interest calculations.
A triangle has angles 60°, 60°, and 60°. What type of triangle is it?
View QuestionThe ratio of two numbers is 3:5, and their sum is 64. What are the numbers?
View QuestionA man spends 75% of his income and saves Rs. 600. What is his total income?
View QuestionIf x^2 - 5x + 6 = 0, what are the roots?
View QuestionIf a+b = 10 and ab = 21, what is the value of (a-b)^2?
View QuestionWhat is the length of the diagonal of a square with a side length of 7 cm?
View QuestionThe probability of getting an even number when rolling a die is:
View QuestionIf sin(A) = 3/5 and cos(B) = 5/13, where A and B are acute angles, what is sin(A+B)?
View QuestionIf the sum of the squares of two consecutive positive integers is 365, what are the integers?
View QuestionIf a cone has a radius of 5 cm and a height of 12 cm, what is its slant height?
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