4 years ago

I could really use your help

Mathematics

1 answer:

nydimaria [60]4 years ago

8 0

Answer:

x = $\frac{c-a}{5y}$

Step-by-step explanation:

Given

5xy + a = c ( isolate 5xy by subtracting a from both sides )

5xy = c - a ( isolate x by dividing both sides by 5y )

x = $\frac{c-a}{5y}$

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Anna enjoys having dinner at a restaurant in a town where the sales tax on meals is 10%. She leaves 15% tip before the sales tax

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Answer:

The cost of her dinner without tax or tip is $22.

Step-by-step explanation:

Given:

Anna enjoys having dinner at a restaurant in a town where the sales tax on meals is 10%.

She leaves 15% tip before the sales tax is applied, and the tax is calculated on the pre-tip amount.

She spends a total of $27.50 on her dinner.

Now, to find the cost of her dinner without tax or tip.

Let the cost of dinner without tax or tip be $x.$

So, the tax is:

$10\%\ of\ x.$

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$=0.10\times x$

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And, the tip is:

$15\%\ of \ x.$

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As given, she spends a total $27.50 on her dinner.

Now, to get the cost of her dinner without tax or tip:

$x+0.15x+0.10x=27.50$

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$x=\$22.$

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I could really use your help​

I could really use your help