3 years ago

What is the value of x

Mathematics

2 answers:

mixer [17]3 years ago

3 0

Answer:

its 3/2

Step-by-step explanation:

Ugo [173]3 years ago

3 0

Answer:

none x= 3/2

Step-by-step explanation:

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Answer:

6.79

Step-by-step explanation:

-Let X denote the total amount of the job.

-The job has to be done in 5 hrs, therefore the portion done every hour is:

$Rate=\frac{Total}{Time}\\\\=\frac{X}{5}\\\\=\frac{1}{5}X=0.2X$

Therefore, the rate of Bill and Ted working jointly must equal the rate calculated above:

$R_{Bill}=\frac{X}{19}\\\\=\frac{1}{19}X\\\\R_{Bill}+R_{Ted}=R_{required}\\\\\frac{1}{19}X+R_{Ted}=\frac{1}{5}X\\\\R_{Ted}=\frac{1}{5}X-\frac{1}{19}X\\\\=\frac{14}{95}X\\\\\therefore \frac{14}{95}X=1\ hr\\\\X=1\div \frac{14}{95}\\\\=6.7857\approx 6.79$ $hrs$

Hence, Bill working alone should complete the house in 6.79 hrs

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3 years ago

A boy spent one-half of his money for a book and one-third of his money for a pen. The remaining $2.25 he saved. How much money

Tema [17]

Let his original money is x

So, $\frac{x}{2}$ + $\frac{x}{3}$ + 2.25 = x
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So, he had $13.5 originaly.

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