Book 10

Monika wants to start reading a book. She calculated that if she reads exactly 14 pages every day, it will take her one page longer to read the book than if she reads exactly 16 pages every day. Calculate how many pages the book has. Determine how many days it would take Monica to read the entire book if she read exactly 14 pages every day.

Correct answer:

d =  8
n =  112

Step-by-step explanation:


n = 14d
n = 16(d-1)

n = 14·d
n = 16·(d-1)

14d-n = 0
16d-n = 16

Pivot: Row 1 ↔ Row 2
16d-n = 16
14d-n = 0

Row 2 - 14/16 · Row 1 → Row 2
16d-n = 16
-0.13n = -14


n = -14/-0.125 = 112
d = 16+n/16 = 16+112/16 = 8

d = 8
n = 112

Our linear equations calculator calculates it.



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