Percent Equations - SchoolRack分方程SchoolRack 1 Module und Variations_E When fractions are equal or proportional: Percent Equations - SchoolRack分方程SchoolRack 1 Module und Variations_E When fractions are equal or proportional: Many word problems can be solved using the formula “is over of equals percent over 100.” We can use this relationship to set up equations and solve for the variable. BACK The value of the is & of come from the problem The number here is already a percent, just replace with the number The 100 stays the same in all problems Only 2 of the 3 values of is, of, and % will be given, the missing amount is were you will put the variable. BACK Example #1 Sixty-eight is 20% of what number? 68 20 x BACK Example #2 What number is 15% of 60? 15 60 x BACK Example #3 37 is what percent of 296? 37 296 x BACK You try this one. 谢谢