Book 10

Monica wants to start reading a book. She calculated that if she reads exactly 14 pages every day, she will need one more day to finish 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 reads exactly 14 pages every day.

Final 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

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You need to know the following knowledge to solve this word math problem:

algebranumbersUnits of physical quantitiesGrade of the word problem

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