Question

21. Vivek read 2/7 of a book on one day and 5/16 of remaining next day. If 275 pages of the book were
still unread, how many pages did the book contain?​

Answer 1

Answer:

832 pages are in the book of vivek

Answer 2

Answer:

Step-by-step explanation:

Let the book have x number of pages.

According to the given information, Vivek read 2/7 of a book on one day.

Then he read $\frac{2}{7}x$ of the book on one day.

According to the given information,

Vivek read 5/16 of remaining next day.

Now, the remaining after the first day is $x-\frac{2}{7}x = \frac{5}{7}x$.

Then, he read $\frac{5}{16} (\frac{5}{7}x)=\frac{25}{112}x$ pages of the book the next day.

Now, the number of unread pages are,

$x-(\frac{5}{7}x+\frac{25}{112}x )= x-(\frac{80x+25x}{112})=x-\frac{105x}{112} = \frac{7x}{112} =\frac{x}{16}$

According to the given information,

275 pages of the book were still unread.

Then, $\frac{x}{16}$ = 275.

That is, x = 275 * 16 = 4400 pages.

Thus, the book at 4400 pages in total

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