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Say you've just eaten a decent meal with some good service at a decent restaurant and you want to tip your waitress 18%, but the bill comes to $37.62.
In order to estimate what 18% is of that bill, first calculate what 10% of it is, which can be easily done by moving the decimal place over to the left by one. 10% of $37.62 is $3.76. Next, find out what 20% of the bill is by doubling this last number. 20% of $37.62 = 2 X 10% of $37.62 = 2 X $3.76 = $7.52. Now, you know that 18% must fall somewhere between $3.76 and $7.52, and in fact, you know that it will fall closer to the larger value than the smaller. Therefore, a tip of $6.50 seems like a pretty good estimate of what you were trying to do.
Let's double check.
$6.50/$37.62 = 17.3%. So, we weren't exact, but we were close, and all we did was estimate using percentages, and trust me, the waitress will be happy with that tip!
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∙ 13y ago
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percent of base
How can you solve problems using percents?
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the *t.k=-44327=`~=(:
How do you estimate with percents?
divide the two numbers then divide
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When using percents what does the letter b stand for?
percent of base
How do you estimate percents?
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How can you solve problems using percents?
There is no single method. There are different methods for different problems.
What are three ways to solve for percents using proportions?
nevermind, i just realized it. It's is/of=%/100
