Book reading

If we read the book at a speed of 15 pages a day, we read it three days before we read it at a speed of 10 pages per day. If I read six pages per day, how many days will I read the book?

Correct answer:

x =  15 d

Step-by-step explanation:

n/15=n/103  n=90  n=190=90  n=90  x=n/6=90/6=15 d

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