Dong Dong spent a week reading a storybook. He read 150 pages in the first three days and 200 pages in the last four days. How many pages did Dong Dong read on average every day?

2024-09-12 20:36

1 answer

2024-09-13 01:33

Dong Dong spent a week reading a storybook. He read 150 pages in the first three days and 200 pages in the next four days. We can use the formula of "A total of X pages in the previous N days, an average of Y pages per day" to calculate how many pages Dongdong reads on average per day: 1 Calculating the total number of pages in the first three days:150 pages/3 days = 50 pages/day 2. Total pages in the next four days:200 pages/4 days = 50 pages/day 3. Calculating the average number of pages per day: Total pages/days = 50 pages/day/7 days = 75 pages/day Therefore, Dongdong read an average of 75 pages a day.

Xiao Dong read a storybook. He read 68 pages in the first four days and 72 pages in the next three days. How many pages does Xiao Dong read on average every day?

1 answer

2024-09-14 19:46

Assuming that the total number of pages Xiao Dong read every day was constant, then the average number of pages he read every day could be calculated by calculating the total number of pages in the first 4 days and the last 3 days. The total number of pages read in the first four days was 68, so Xiao Dong had read a total of 68 pages in these four days. The total number of pages he read in the next three days was 72 pages, so Xiao Dong read a total of 72 pages in these three days. Therefore, Xiao Dong had read a total of 68 + 72 + 10 + 2 = 190 pages in these 8 days. Divide the total number of pages by the total number of pages you read every day to get the answer to how many pages Xiao Dong reads on average every day: 190/8 = 225 pages The answer was 225 pages because Xiao Dong read an average of 225 pages a day.

Xiao Dong read a storybook. He read 68 pages in the first 4 days and 72 pages in the next 3 days. How many pages did Xiao Dong read on average every day? The correct calculation was () A…

1 answer

2024-09-14 20:28

Xiao Dong read 68 pages in the first 4 days and 72 pages in the next 3 days, so the total number of pages in the book was 68+72+4*10=190 pages. How many pages does Xiao Dong read on average every day? How many days did Xiao Dong watch it? (Note: You need to add the first 4 days and the last 3 days to get the total number of days.) Xiao Dong reads an average number of pages per day = total pages/total days =190 pages/14 days =14 pages/day Therefore, Xiao Dong read an average of 14 pages a day. Therefore, he chose option A.

Xiao Dong read a storybook. He read 68 pages in the first 4 days and 72 pages in the next 3 days. How many pages did Xiao Dong read on average every day? The correct calculation was () A…

1 answer

2024-09-14 20:05

Xiao Dong read a storybook for a total of 68 pages in the first 4 days and 72 pages in the next 3 days, so the total number of pages read was:68+72+4*3=191 pages. How many pages does Xiao Dong read on average every day? It took Xiao Dong seven days to finish reading the book, so the average number of pages Xiao Dong read every day was 191/7=25 pages. Therefore, the correct calculation was page 25. The statement on page 20 of Item A was wrong. Page 17 of Item B and page 18 of Item C were all correct. Item D, page 26, is incorrect.

A math problem, reading a storybook, 131 pages in the first four days, 93 pages in the next three days, how many pages do you read on average every day?

1 answer

2024-09-14 19:50

Dongdong had read a total of 131 pages in the first four days of reading a storybook. 131 pages/ 4 days = 35 pages/day In the next three days, he read 93 pages. 93 pages/ 3 days = 31 pages/day Therefore, the average number of books Dongdong reads every day is: 35 pages/day + 31 pages/day = 66 pages/day Therefore, Dongdong had to read an average of 66 pages a day before he finished reading the book.

In the first three days, he read 43 pages. In the next four days, he read 12 pages a day. How many pages did Le read on average?

1 answer

2024-09-14 19:51

Xiao Le read an average of 18 pages a day.

Xiao Dong read a 420-page book. He read 26 pages a day. After reading for 13 days, how many pages were left?

1 answer

2024-09-16 11:04

Xiao Dong read a 420-page book. He read 26 pages a day, and after 13 days, there were still pages left. The calculation process was as follows: The total number of pages he read in 13 days was 26 * 13 = 336 pages. The total number of pages in this book is 420, so the total number of pages needed to read the whole book is 420. Therefore, the number of pages Little Dong needed to finish reading the book in 13 days was 336 pages/13 days = 26 pages/day. Because Xiao Dong read 26 pages every day, the total number of pages he read every day was 26 + 26 = 52. Therefore, the number of pages Little Dong needed to finish reading the book in 13 days was 52 pages/13 days = 4 pages/day. Because Xiao Dong read four pages a day, the remaining pages were 420 - 4 * 13 = 420 - 52 = 368. Therefore, Xiao Dong still had 368 pages to read.

Chen Ming read a storybook and read an average of 11 pages a day for the first three days. He read an average of 18 pages a day for the next four days. How many pages did Chen Ming read on average in the past seven days?

1 answer

2024-09-14 19:51

Suppose the book has a total of x pages, and Chen Ming has read a total of y pages in these seven days: - Chen Ming read 11*3=33 pages in the first three days - In the next three days, Chen Ming read a total of 18*3=54 pages - In seven days, Chen Ming read a total of y*7=497 pages Therefore, Chen Ming read an average of 497/7=74 pages a day in the past seven days.

Lili finished reading a storybook in 8 days. She read 150 pages in the first 3 days. For the next 5 days, I read 42 pages a day. How many pages do I read on average every day?

1 answer

2024-09-14 20:25

Lili spent 8 days to finish reading a storybook. She read 150 pages in the first 3 days and 42 pages a day in the next 5 days. So she read a total of $150/times 3 + 42/times 5 = 2220$pages. And the total time she spent was $8$days, so she read an average of $2220 / 8 = 265$pages per day. So Lili read an average of 265 pages a day.

Snowy spent a week reading a book. She read 15 pages a day for the first three days and 95 pages in the last four days. Did Snowy finish the book?

1 answer

2024-09-12 21:29

Snowy finished reading page 140.

Little Ming read a book. He read 15 pages in the first 4 days and 6 pages a day in the next 5 days. How many pages did he read on average every day?

1 answer

2024-09-16 12:50

Xiao Ming read a book for the first 4 days and read 15 pages, then read 6 pages every day for 5 days. We can use the following formula to calculate the average number of pages seen per day: Average number of pages read per day = total number of pages/days Substituting the total number of pages and the number of days into the formula, we get: Average number of pages read per day = 15 pages/4 days = 3 pages/day Therefore, Xiao Ming read an average of three pages a day.