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lesya [120]
3 years ago
12

Joe earned money for baby-sitting , he spent 1/4 of the money on a guitar then he gave 1/4 to charity , if he has $108 left how

much money did he start with?
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
3 0

Answer:

216 US dollars

Step-by-step explanation:

Let the amount he earned for babysitting be x

He spent 1/4 of x on guitar=(1/4)×x=1/4x

He gave 1/4 of x to charity= (1/4)×x=1/4x

Equation 1

Total amount left=(Total amount earned -Total amount spent)

Total amount earned=x

Total amount spent=(Spent on Guitar+Spent on Charity)=(1/4x)+(1/4x)=1/2x=0.5x

Total amount left=108 US dollars

Substituting in equation 1

108=(x-0,5x)

Solving

0.5x/0.5=108/0.5

x=216 US dollars

He started with 216 US dollars

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Step-by-step explanation:

First, multiply the two denominators together to get the shared denominator, which will allow you to actually subtract the two numbers. 4 × 8 = 32, so the shared denominator will be 32.

Then, cross-multiply. 11 × 8 = 88, so \frac{11}{4} becomes \frac{88}{32}. 3 × 4 = 12, so \frac{3}{8} becomes \frac{12}{32}.

Now, you can subtract.  \frac{88}{32} -\frac{12}{32} =\frac{76}{32}

Finally, simplify. \frac{76}{32} =\frac{19}{8}. The final difference is \frac{19}{8}.

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3 years ago
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An x-intercept is namely a "solution" or "zero" or "root" often called, and when that happens, y = 0, just like with any other x-intercept.

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10. There are 355 students at Median Middle School. If there 8% of the students were absent on Tuesday, how many students were a
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To solve this question, we simply need to divide the total amount of students by 8% to find out how many students were absent and how many were present.

However, we can't simply multiply it by 8%, so we need to turn that into a decimal.

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<em>355 x 0.08</em>

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<em />

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<em />

<em />

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Answer:

The answer is C. Depression.

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