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Tju [1.3M]
3 years ago
12

Solve proportion round it to the nearest hundredth

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

<u>7</u><u>.</u><u>7</u><u> </u><u> </u>= <u>2</u><u>.</u><u>3</u>

3.6 b

<u>7</u><u>.</u><u>7b</u>= <u>8</u><u>.</u><u>28</u>

7.7 7.7

b = 1.075324675

b = 1.08

A) If the last digit in the fractional part of 1.080 is less than 5, then simply remove the last the digit of the fractional part. With 1.080, rule A applies and 1.08 rounded to the nearest hundredth is:

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notka56 [123]

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x= 30.29 (1-0.223) = 23.54

Ephraim paid a 22.3% tip, what was his bill before adding the tip?

23.54

Step-by-step explanation:

For this case we assume the following notation:

T= 30.29 represent the total paid for the dinner

x represent the amount before adding the tip

f =0.223 represent the fraction of the total amount destined to the tip

Based on this we can create the following relationship between T and x:

T = f*T + (1-f)T = f*T + x

And we can solve for x from the previous equation like this:

x = T - f*T

Taking T common factor we got:

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Ephraim paid a 22.3% tip, what was his bill before adding the tip?

23.54

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