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Learn about ratio example problems and how to solve them in this Khan Academy video.

Sal uses rates to solve word problems. For example, Lynette can wash 95 cars in 5 days. How many cars can Lynette wash in 11 days?

Learn about proportional reasoning with ratios and rates in this Khan Academy unit.

Khan Academy

In particular, students solve ratio and rate using tape diagrams, tables of equivalent ratios, double number line diagrams, and equations. They plot pairs of values generated from a ratio or rate on the first quadrant of the coordinate plane."

Ratios, rates, proportions; Equations, expressions, and inequalities; Exponents, radicals, and scientific notation; Algebra basics. Foundations; Algebraic expressions; Linear equations and inequalities; Graphing lines and slope; Systems of equations; Expressions with exponents; Quadratics and polynomials; Equations and geometry; Algebra 1 ...

In this video, we explore ratios using apples and oranges. We find the simplified ratio of apples to total fruit (2:5) and learn to represent ratios as fractions (2/5). The fraction indicates that 2/5 of the fruit are apples. Key definitions include ratio, simplified ratio, and fraction notation.

There are a LOT of things in mathematics going forward that rely on manipulating ratios, so get familiar with them early on.... I suggest mastering everything on Khan Academy starting with …