Question

How to add numbers to percentages? For example, 20+300%. I really want to know how to do this but i cant figure out . I really want to cry right now because i cant find anything that can help me! Please some one explain to me well?!!

Answer 1

80

Explanation:

If your calculator does not have a percent key and you want to add a percentage to a number multiply that number by 1 plus the percentage fraction. For example 25000+9% = 25000 x 1.09 = 27250. To subtract 9 percent multiply the number by 1 minus the percentage fraction. Example: 25000 - 9% = 25000 x 0.91 = 22750.