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A book has 170 pages. Xiaowen has read two-fifths of it. How many pages are there left?

A book has 170 pages. Xiaowen has read two-fifths of it. How many pages are there left?

2024-09-10 12:51
A book has 170 pages. Xiaowen has read two-fifths of it. How many pages are there left?
1 answer

Xiaowen had read two-fifths of the book, which meant that Xiaowen had read 170 pages divided by 2 = 85 pages. There were still 170 - 85 pages = 85 pages that he had not read.

Three fifths of a book has been read, and there are 15 pages left. The number of pages read is a fraction of the number of pages not read

If a book has been read three-fifths of the way and there are 15 pages left, then the number of pages read is the number of pages not read: Number of pages seen/number of pages not seen = 3/5/4/5 = 3/4 Therefore, the number of pages that had been read was four-thirds of the number of pages that had not been read.

1 answer
2024-09-18 15:44

I have read two-fifths of a book, and there are still 135 pages left to read. I want the number of pages in the whole book.

Suppose the book has x pages. It was known that two-fifths of the book had been read, and the remaining pages were 135. Therefore, he read this book in total: 135/(2/5 + 1) = 625/7/5 = 1275 pages. Since the total number of pages in the book is x, there are: x = 1275 pages. Therefore, the total number of pages in the book was: x = 1275 pages.

1 answer
2024-09-18 16:15

He had clearly read four-fifths of the story book, but there were still 16 pages left. How many pages was this book?

He had clearly read four-fifths of the storybook, and there were still 16 pages left to write the equation: He had clearly read 4/5 of the storybooks, and there were 16 pages left. 1 + 4/5 = 9/5 books Because I have read 4/5 storybooks, each storybook has: 4/5/1 = 8/15 pages Therefore, this book had: 9/5 × 8/15 = 96/15 pages It was about six pages.

1 answer
2025-03-07 23:53

Xiao Hong had already read 40 pages of the book, which was exactly two-fifths of the book. How many pages were left?

If Xiao Hong had already read 40 pages of a book, which was two-fifths of the book, then Xiao Hong had already read 20% or 0.2 times the book. How many pages are there in the book? You can divide the number of pages by the number of pages in the book: (100% - 02) / 100% = 90% Therefore, Little Red only had 10 pages left.

1 answer
2024-09-18 15:45

Xiao Ming is reading an extra-cursory book. This book has 150 pages. He has read three-fifths of the total pages. How many pages has he read and how many pages are left?

The total number of pages that Xiao Ming had read was 150. He had already read three-fifths of the total number of pages, which was 3/5 = 6%. Therefore, Xiao Ming had already read about 6% of the pages, and the remaining pages were 150 - 6%= 144 pages.

1 answer
2024-09-18 15:21

Little Light had a book. He read 18 pages on the first day, which was two-fifths of the book. How many pages were left?

This book was left: Two-fifths of the book is 18 pages, 2/5 = 9 pages (with two decimals) Therefore, there were still nine pages left in the book.

1 answer
2024-09-18 15:30

Xiao Hong read a book and read 15 pages a day. After four days, she still had three-fifths of the book left. How many pages was this book?

Let's say the book has $x$pages. Reading 15 pages a day, it would take Xiaohong $x$days to finish reading this book. The remaining pages were three-fifths of the book, which was $025x$. According to the question, it would take Xiaohong four days to finish reading this book. Therefore, we can write the equation: $$ x + 025x = 025 \times (x+4) $$ Solve this equation: $$ x = 30 $$ So this book has 30 pages.

1 answer
2025-02-28 21:53
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