Summary

Summary

● A ratio is a comparison of two quantities by division.

● Ratios are often expressed as fractions in the simplest form.

● A ratio has no unit.

● The two quantities of a ratio should be in the same unit.

● Order of the terms in a ratio cannot be reversed.

● To get an equivalent ratio, multiply or divide the numerator and denominator by the same number.

● When two ratios are equal, they are said to be in proportion.

● The proportionality law states that the product of the extremes is equal to the product of the means.

● Finding the value of required number of units by knowing the value of one unit is known as unitary method.