A set of useful percent to fractions that will save a lot of time when attempting problem solving questions in the Quant section of the GMAT test.
Percentages Equivalent Fraction
33.33% 1/3
16.66% or 16.67% 1/6
66.66% or 66.67% 2/3
6.66% or 6.67% 2/30 or 1/15
14.28% 1/7
12.5% 1/8
11.11% 1/9
9.09% 1/11
8.33% 1/12
7.14% 1/14
Let us say you have a question that states that a family spends 66.66% of its income and saves the rest. If its savings is USD 3000, how much did the family spend?
66.66% can be written as 2/3rd. So, the family spends 2/3rds of its income.
The balance that the family saves = 1 - 2/3 = 1/3rd of the income.
Savings = USD 3000 = 1/3rd the income
Hence, income = 3*3000 = USD 9000.
Trying to crack the same question keeping it in percent terms could lead to unsavory calculations.Labels: Calculation, Fractions, GMAT Math, Percent, Shortcuts, Tips