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Question

If Maria went to a book store and sees that the cost of one book is $15. Maria wants to buy 140 books, how much amount she needs to pay?

A
$2,000
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B
$2,100
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C
2,200
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Solution

The correct option is B $2,100
Cost of one book =$15
Total number of books Maria wants to buy =140
Amount that Maria needs to pay to buy 140 books =140×$15

This product can be evaluated as:

First, we need to multiply the units digit, i.e., 5 with 140.

Now, we would multiply the tens digit, i.e., 1 with 140.


Now, we would add 700 and 1400 to get the answer.



The amount that Maria needs to pay to buy 140 books would be $2,100.

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