2. Xiao Hua read a story book. On the first day, he read 1 / 3 of the whole book. On the second day, he read 1 / 6 of the whole book. There are 36 pages left? 2. Xiaohua read a story book, the first day read 1 / 3 of the whole book, the next day read 1 / 6 of the whole book, there are 36 pages left. This book has% d% a

2. Xiao Hua read a story book. On the first day, he read 1 / 3 of the whole book. On the second day, he read 1 / 6 of the whole book. There are 36 pages left? 2. Xiaohua read a story book, the first day read 1 / 3 of the whole book, the next day read 1 / 6 of the whole book, there are 36 pages left. This book has% d% a


36 / {1-1 / 3-1 / 6} = 36 / {1-1 / 2} = 36 / {1 / 2} = 36 * 2 = 72, 72 pages in total



Huanhuan read a story book. On the first day, she read 13 of the whole book, and on the second day, she read the remaining 14, leaving 6 pages to be read. (1) how many pages does this story book have? (2) How many more pages did you read on day 1 than on day 2?


(1) A: there are 12 pages in this story book; (2) 12 × [13 - (1-13) × 14], = 12 × 16, = 2 (pages); a: I read two more pages on the first day than on the second day



In a story book, Xiao Hong read 1 / 5 of the whole book on the first day, 35 pages the next day and 45 pages left
The same number of chickens and rabbits are locked in the same cage. Li, it is known that there are 30 more rabbit feet than chicken feet. How many chickens and rabbits are there in the cage?
It's all arithmetic and equations. Quick


Suppose the book has x pages, X / 5 + 35 + 45 = x, x = 100; arithmetic solution: (35 + 45) / (1-1 / 5) = 100
The mathematical solution is: the number of free feet is one time more than that of chicken feet, 30 / (4-2) = 15

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NEXT: Xiao Hong read a book. On the first day, she read & nbsp; 15 of the whole book, and on the second day, she read & nbsp; 38 of the whole book. At this time, there are 51 Pages left. How many pages are there in this book?