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Question

Anita had to do a multiplication. Instead of taking 35 as one of the multipliers she took 53. As a result the product went up by 540. What is the new product?

A
1050
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B
540
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C
1440
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D
1590
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Solution

The correct option is D 1590
Let the number that Anita wanted to multiply be 'X'.
She wanted to find the value of 35X.
Instead, she found the value of 53X.
The difference between the value that she got (53X) and what she was expected to get (35X) is 540.
Then 53x35x=540
18x=540
x=30
correct product is 53×30=1590


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