Ratio vs. Proportion

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls. #ratio #proportion #math Problem: The ratio of one chemical to another one is 7 : 8. If the percentage increase by 20% and 10% respectively, what will be the new ratio? A) 8 : 9 B) 17 : 18 C) 21 : 22 D) Cannot be determined