Lele read a story book. On the first day, she read 1 / 3 of the whole book. On the second day, she read 3 / 8 of the whole book. The rest of the story book should start from 69 pages. How many pages of the story book

Lele read a story book. On the first day, she read 1 / 3 of the whole book. On the second day, she read 3 / 8 of the whole book. The rest of the story book should start from 69 pages. How many pages of the story book


Suppose the whole book has x pages
1/3X+3/8X=68



Lele read a story book in the reading month. On the first day, she read one third of the book, and on the second day, she read the remaining 25%. On the second day, she read more than one third of the book
How many pages are there in this book?


One minus one-third is two-thirds
Two thirds multiplied by twenty-five percent is one sixth
One third minus one sixth is one sixth
Twenty divided by one sixth is one hundred and twenty pages
(it's too difficult to express a few parts in Arabic numerals, so I use Chinese form. Don't be surprised.)



1. Lele read a story book. On the first day, he read 1 / 3 of the whole book, and on the second day, he read 3 / 8 of the whole book. The rest should start from 69 pages?
2. A cuboid of 6cm in length, 4cm in width and 3cm in height is cut into two small cuboids of equal size. The surface area of the cuboid is increased by () square centimeter at most and () square centimeter at least
I'm in a hurry
No need for the first question


48
twenty-four

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