Hello everyone!! In this video we have examples of the Compound Rule of Three - Professor Angela Mathematics. This video was made at the request of subscribers, about the Compound Rule of Three. The rule of three is used to solve problems involving proportional quantities. In the three examples in this video we have problems of the compound rule of three, in them we have three or more quantities, each quantity has two values, that is, a total of six values, five known and one unknown, which we will call X and calculate its value using the rule of three through cross multiplication. Since it is a compound rule of three problem, with five or more known values ​​and one unknown, we cannot calculate the unknown value using all the quantities together, we have to calculate two by two quantities observing whether these two quantities are directly or inversely proportional in order to be able to set up the proportion and calculate the unknown value. I hope you have clarified your doubts through the examples and if you liked the video click on like so that more people can watch it and learn from it. Thank you and a big hug, Professor Angela Also watch the following videos here on the channel: Link to this video: • Compound Rule of Three - Professor ... Simple Rule of Three: • Simple Rule of Three - Professor A... Ratio and Proportion - Part II: • Ratio and Proportion part II - Professor ... Ratio and Proportion - Part I: • Ratio and Proportion - Part I - Professor ... Transforming a decimal number into a fraction: • Transforming a decimal number into a fra... Transforming a fraction into a decimal number: • Transforming a fraction into a decimal n... Fraction of a whole: • Fraction of a whole - Living Mathematics ... Exact Square Root of a Natural Number: • Exact Square Root of a Natural N... Decomposition of a number into prime factors: • Decomposition of a number into factor... Numerical Expressions with Fractions: • Numerical Expressions with Fractions - Living Mathematics ... Numerical Expressions with Natural Numbers: • Expressions Numerical with the Four ... Division with Natural Numbers: • DIVISION with Natural Numbers - Profes... Multiplication with Natural Numbers: • Multiplication with Natural Numbers-Vi... Addition and Subtraction with Natural Numbers: • Addition and Subtraction with Natural N... Set of Whole Numbers: • The Set of Whole Numbers (Z) ... Multiplication and division with decimal numbers: • DECIMAL NUMBERS - Multiplication and Di... Addition and subtraction with decimals: • DECIMAL NUMBERS - Addition and Subtraction... Multiplication and Division of fractions: • FRACTION - Multiplication and Division ... Addition and Subtraction of fractions: • FRACTION - Addition and Subtraction - Profes... Percentage: • PERCENTAGE - Professor Angela Mathematics ... GCD - Least Common Multiple: • GCD PROBLEMS - Professor Angela ... GCD - Maximum Common Divisor: • GCD BY EUCLID'S ALGORITHM - LIVING... What is a fraction: • What is a FRACTION? Teacher Angela... Equivalent fractions: • Equivalent Fractions - Living the ma... Simplifying fractions: • Simplifying Fractions - Teacher... Mixed numbers: • Mixed Numbers - Teacher Angela Ma... Geometric shapes with play dough: • Geometric Figures with Play Dough - Living... It is important to emphasize that so far the videos on this channel do not receive any sponsorship, they are made with my own resources. #regradetrescomposta #regradetres #professoraangelamatematica Angela Pereira Correia - Teacher Angela