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3 years ago

A woman earns $2700 per month and budgets $351 per month on food. What percent of her income is spent on food?

2 answers:

5 0

($351/$2700) x 100

What you are basically doing with this is that you are finding the decimal value of the quotient and then since you need to find the percent you would have to multiply the decimal value by 100.

0.13 x 100 = 13% <- (answer)

maksim [4K]3 years ago

3 0

Answer is 13%

351 * 100 / 2700 = 13%

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Rus_ich [418]

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3 years ago

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Korvikt [17]

Basically you're solving for both variables here.
I prefer elimination method so that is what I used.
I started off by multiplying each equation in order to get one of the variables at the same value so it would be possible to cancel it out.
Multiplying the first equation by 3 gave me,
12x + 15y = 69
Then I multiplied the second equation by 4,
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As you can see, it's not possible to cancel out the x variable.
12x + 15y = 69
+(-12x + 28y = -56)
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13y = 13
Then just solve for y which gives you -1.
After you have one variable solved simply insert it into one of the original equations to find the other variable.
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4x - 5 = 23
4x = 28
x = 7.
And there you have it! Hope this helped!

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