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Little Red read a book and read 15 pages a day. After four days, she still had 3/5 of the book left. How many pages was this book?

2024-09-15 06:06
Little Red read a book and read 15 pages a day. After four days, she still had 3/5 of the book left. How many pages was this book? (Solve the equation)
1 answer

Little Red reads a book 15 pages a day, and after 4 days, there is still 3/5 of the book left. We can assume that this book has x pages. According to the question, Little Red had read a total of $4/times 15 = 60$pages in 4 days. The remaining pages are 3/5 of the book, so there are: $$ 60\div 3/5=24 $$ Therefore, the book had 24 pages.

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Xiao Hong had read a book. She read 24 pages a day. After five days, she still had 40% of the book left. How many pages was this book?

1 answer
2024-09-15 06:19

Little Red read 24 pages a day for 5 days, so how many pages did she read in total: 5 days x 24 pages/day = 120 pages The rest of the book takes up 40% of the whole book, so the remaining pages take up: 40% ÷ 100% = 04 The pages of the book were: 120 pages/04 = 300 pages So this book has 300 pages.

Little Red was reading a fairy tale book. Every day, she would read 15 pages. After four days, she still had 3/5 of the book left. How many pages was this fairy tale book?

1 answer
2024-09-16 10:05

Little Red read a fairy tale book for 15 pages a day. After four days, she still had 3/5 of the book left. Assuming that this fairy tale book has a total of x pages: Little Red read a total of 4x15 = 60 pages in four days. The remaining pages are 3/5 of the book, so there are: 60 pages/(3/5) = 120 pages. Therefore, this fairy tale book had a total of 120 pages.

Little Cong read a book and read 15 pages a day. After four days, there were still three-fifths of the book that he had not read. How many pages was this book?

1 answer
2024-09-15 06:43

Suppose the book has x pages: Little Cong read 15 pages a day for four days, a total of 4×15=60 pages. The total number of pages in the book is x, so: 60÷(1+3/5)=x÷5 The solution was:x=60×5 div3 =600 div3 =200 pages. Therefore, the book had a total of 200 pages.

Xiao Ming read a book and read 15 pages a day. After reading for 4 days, he still had 2/5 of the book left. How many pages does this book have?

1 answer
2024-09-16 10:13

Xiao Ming read a total of $4/15 = 60$pages in 4 days. The remaining pages are $2/5$of the book, so the book has a total of $2/5/60 = 48$. Thus, the book had a total of 48 pages.

Xiao Hua read a book and read 15 pages a day. After reading for 4 days, he still had 2/5 of the book left. How many pages of this storybook had he not read?

1 answer
2024-09-15 06:15

Assuming that this storybook had $x$pages, then the number of pages Little Light read every day was $15/div4 = 375$pages. Little Light had already read $4$for days, so the remaining pages were $x - 4/375 = x - 1125$. Because the number of pages Little Light reads every day is fixed, the number of pages can be expressed as: $$x - 4 \times 375 = 375 \times 4 - 1125$$ The above formula was simplified to: $$x = 48$$ Therefore, there were still $48 - 1125 = 3675 pages of this storybook that he had not read.

When Little Red was reading a book, 5/7 of the pages she had read was equal to 3/5 of the pages she had not read. Little Red had already read 210 pages. How many pages were left?

1 answer
2024-09-18 07:24

According to the description of the question, 5/7 of the pages that Little Red had read was equivalent to 3/5 of the pages that she had not read. The number of pages Little Red has read = the number of pages she has not read x 5/7 = 210 pages x 3/5 = 350 pages Therefore, Little Red had 210 pages- 350 pages = 80 pages left. Therefore, Little Red still had 80 pages to read.

Reading a storybook every day, 40 pages a day. After 3 days, there is still 5/8 of the Golden Book left. How many pages is this book?

1 answer
2024-09-16 10:03

Assuming the book has $x$pages: - $40$on the first day. - The next day, he read $40/times 2 = 80$pages. - On the third day, if you read $3/8$on $40$pages, you would read $10$pages. Because there was still $5/8 left, there was: $$ 40 + 80 + 10 = \boxed{120} $$ So this book has 120 pages.

Little Light reads a book. He reads 15 pages a day. After 4 days, he still has 3/5 of the book left. How many pages is this book?

1 answer
2024-09-16 10:13

Assuming that the book had a total of $n$pages, then according to the question, Little Light finished reading $15/times 4 = 60$pages in 4 days. The remaining pages are $n - 60$. And because the total number of pages in the book is 3/5 of the book, there are: $$n - 60 = 3/5 \times n$$ The above formula was simplified to: $$n = 225$$ Therefore, the book had a total of 225 pages.

A book has a total of 90 pages. After reading for 2 days, there are still 30 pages left. How many pages does Xiaohua read every day?

1 answer
2024-09-16 02:51

A book has a total of 90 pages. After reading it for two days, Little Light still has 30 pages left. 30 pages/2 days = 15 pages/day Because Little Light reads 15 pages of this book every day, the proportion of pages that Little Light reads every day is: 15/90 = 1/6 Therefore, Little Light read one-sixth of the book every day.

Little Ming read a book and read 120 of the book every day. After 5 days, there were 120 pages left. How many pages does this book have? He still needs a few days to finish reading it)

1 answer
2024-09-16 03:02

This book had a total of $1/20/div1/20 = 600$pages. Little Ming still needed $5/div2 = 2$days to finish reading this book.

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