Mathematics: Ms Wharton bought some books at a book sale including 20 paperback books 80% of all the books she bought were paperbacks

Yes, it is. You can simply input 4/7 in a calculator to see that the answer isIn other words, the 6-period digits 571428 keep repeating after the decimal point: we write this as...

Ms Wharton bought some books at a book sale including

Ответ:

kingsavage2002

01.02.2022

Mathematics

25 books.

Step-by-step explanation:

Let as consider we need to find "how many books did Mr. Wharton buy in all?"

Let total number of books bought by Mr. Wharton be x.

80% of all the books she bought were paperbacks.

$Paperbacks=x\times \dfrac{80}{100}=0.8x$

It is given that the number of paperbacks is 20.

0.8x=20

Divide both sides by 0.8.

$x=\dfrac{20}{0.8}$

x=25

Therefore, Ms Wharton bought 25 books in all.

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Ответ:

pinnky98381

04.05.2022

Mathematics

Yes, it is. You can simply input 4/7 in a calculator to see that the answer is

$\dfrac{4}{7} = 0.571428571428571428\ldots$

In other words, the 6-period digits 571428 keep repeating after the decimal point: we write this as

$\dfrac{4}{7} = 0.\overline{571428}$

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Ms Wharton bought some books at a book sale including 20 paperback books 80% of all the books she bought were paperbacks

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