Second 43001

On the first day, Lenka read half of the book. On the second day, half of the rest, and on the third day, she read 35 pages and read the book. How many pages did the book have?

Correct answer:

n =  140

Step-by-step explanation:

2n+(n2n)/2+35=n  n/2+(nn/2)/2+35=n  0.5n=70  n=0.570=140  n=140

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