My two real life situations were:
#1 My mom was buying a shirt that is 80 USD. The shirt is 40% off. Plus she also had to pay the sales tax, which was 9.25%. What would be the total.
First you do the discount which is .40x80= 32
-80=48
Then its 0.09254x48=4.44
The answer is $52.44
# 2 Lunch has cost 44.75 dollars. How much is that with 20% tip?
Round to 5 and then add the tip =
$9 tip with a total of 53.75
#1 My mom was buying a shirt that is 80 USD. The shirt is 40% off. Plus she also had to pay the sales tax, which was 9.25%. What would be the total.
First you do the discount which is .40x80= 32
-80=48
Then its 0.09254x48=4.44
The answer is $52.44
# 2 Lunch has cost 44.75 dollars. How much is that with 20% tip?
Round to 5 and then add the tip =
$9 tip with a total of 53.75
I think you meant to round up to 45 (not 5). Yes this certainly does make doing mental calculations easier.
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