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Question

The sum of three rational numbers is 15.If two numbers are 25 and 310, then find the third number.


A

810

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B

110

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C

110

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D

210

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Solution

The correct option is C

110


Let the unknown number be x.

15=310+25+xx=15310+25

Taking LCM, we get,x=210310+410x=110


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