Can you multiply by 15? If you cannot then you cannot calculate a 15% tip. Many graduates of the schools in the lower income neighborhoods, “da hood” cannot multiply one number by another number. They are math challenged. They cannot do math which makes it impossible to calculate a tip based on math. What race of people is poor at math?…Well?… What’s your answer?.. It’s the same race that leaves low tips. If you want to find out ask people of different races to multiply something by 15. One way is to take 10% of the bill then take half of that amount and add them together because 5% is half of 10% and 5% plus 10% is 15% and 15% is the minimum amount for a tip..
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