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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

2024-09-14 19:57
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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.

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...
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...
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...
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...
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....
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...
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...
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...
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...
How many pages does Xiao Jun have in a book? He read 37 pages a day for the first three days and 99 pages a day for the next four days. How much is the average page?
1 answer
2024-09-14 20:02
"The System of Reading to Godhood" is a sci-fi novel written by the author. The general plot of this novel is as follows: [You have spent 1 hour silently studying...
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