Question

Which information is not necessary to solve this problem?

Juanita reads 20 pages per night in her library book. She reads 4 nights a week and her book has 200 pages. How many pages does she read each week?

A.
Her book has 200 pages.

B.
She reads 20 pages per night.

C.
She reads 4 nights a week.

Answer 1

She reads 20 pages per night, and 4 nights per week.
$20 \times 4 = 80$
She reads 80 pages each week.

Information A isn't necessary to solve this problem.

Answer 2

We need to find how many pages she read per week and we know she reads 20 pages every night and she goes 4 a nights a week. We multiply how many she reads per night (20) times how often she reads per week (4). 20 x 4 = 80

*Letter A. Her book has 200 pages, is not necessary* ;)