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Estimating Products of Numbers

If there are ...

Question

If there are 4 books in Shelf 1, and 3 times as many books in Shelf 2. How many books are there in Shelf 2?

A

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B

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C

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D

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Solution

The correct option is A
Book-shelf 1 = 4 books
Book-shelf 2 = 3 times as many as Book shelf 1

We know that there are 4 books in shelf 1. Therefore,

Book-shelf 2 = 3 times 4

$3 \times 4 = 12$

Therefore, there are 12 books in book-shelf 2.

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