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LPT: The easiest way to figure out percentages in your head is to calculate 10% at a time
LPT: The easiest way to figure out percentages in your head is to calculate 10% at a time For instance, you want to figure out how to tip 20% quickly or calculate how much money you will need after tax for a purchase. Ex: If the bill is $72.64, 10% of 72.6 is $7.20 cents, times that by 2 and you have $14.40 on a 72.64 bill for 20%.
submitted by /u/0nlyinVegas
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