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?
2024-09-14 20:25
Xiao Hong borrowed a 150-page storybook, and she read 45 pages in three days. If he could only borrow the book for eight days, how many pages would he have to read on average from the fourth day onwards?
1 answer
2024-09-15 00:36
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.
Lili read a storybook. She read 78 pages in the first 3 days and 40 pages a day in the next 4 days. how much of this book
1 answer
2024-09-14 19:57
Assuming the book has a total of n pages, Lili read 78 pages in the first 3 days, then there are still
n - 3 × 78 = n - 262 pages not read.
In the next four days, she read an average of 40 pages a day. In these four days, Lili read a total of 40 × 4 = 160 pages.
Therefore, Lili had read a total of n - 262 + 160 = 322 pages, just enough to finish the book.
So this book had 322 pages.
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.
If Xiaoming reads a storybook, he reads 38 pages in the first 2 days and 54 pages in the next 3 days. How many pages does Xiaoming read on average every day?
1 answer
2024-09-12 20:50
Xiao Ming read a story book and read a total of 38 pages in the first two days and 54 pages in the next three days. We can use the total number of pages to deduct the number of pages in the first two days and the next three days to get the average number of pages that Xiaoming reads every day.
Total pages = 38 + 54 = 82
In the previous two days, he had read 38 pages, so the ratio of the number of pages read in the previous two days to the total number of pages was 38 pages/ 82 pages = 047875, which could be approximately expressed as 047875.
In the next three days, a total of 54 pages were read. The ratio of the number of pages read in the next three days to the total number of pages was 54 pages/ 82 pages = 06667, which could be approximately expressed as 06667.
Therefore, on average, Xiaoming reads 047875 × 2 + 06667 × 3 = 016533 × 2 + 023333 × 3 = 039167 × 2 + 050938 × 3 = 089715 × 2 + 010785 × 3 = 1575 × 2 + 0192 × 3 = 27533 every day, which is about 275.
Therefore, Xiao Ming read an average of 275 pages a day.
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.
Xiao Ming read a book. He read 72 pages in the first 4 days and 29 pages a day for the next 6 days. How many pages did he read on average every day?
1 answer
2024-09-14 19:45
If Xiaoming reads 72 pages in the first 4 days, then Xiaoming's total page count in the first 4 days is 72 pages.
Reading 29 pages every day for the next 6 days would mean that the total number of pages for the next 6 days would be 29 pages x 6 days = 171 pages.
Therefore, Little Ming's total page count in the last six days was 171 pages.
Little Ming read 171 pages per day for the next 6 days, 6 days = 27 pages.
Therefore, Xiao Ming read an average of 27 pages a day.
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.
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.
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.
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.
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