Reading 1
Find ten percent
On a $40 bill, ten percent is $4. Move the decimal one place left and you are there.
Reading 2
Build from it
Twenty percent is double: $8. Fifteen percent is ten percent plus half of it: $4 plus $2, or $6.
Reading 3
Discounts
If an item is thirty percent off $60, ten percent is $6, so thirty percent is $18, and the price becomes $42.
Reading 4
Sales tax
Rates differ by state, county and city, and some items are exempt. A receipt shows the amount charged. We offer no tax advice.
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