RS Aggarwal Solutions for Class 6 Chapter 10 "Ratio-Proportion-and-Unitary-Method", the comparison of two numbers or quantities by division is known as the ratio. Symbol':' is used to denote ratio. The method in which first we find the value of one unit and then the value of the required number of units is known as the unitary method. Example 3 / 4 = 6 / 8 are proportional fractions. Some of the examples of ratio and proportion are grocery shopping, recipes in cooking, vacation trip. Topics related to this Chapter are to convert a given ratio to its simplest form, the ratio of two quantities in the same units, comparison of ratios, proportion, three numbers in operation.