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Question
Anamika thought of a number. She multiplied it by 2, added 5 to the product and obtained 17 as the result. What is the number she had thought of?
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Solution
Let x be the number thought by Anamika.
If she multiplied it be 2, then the number will be 2x.
Also, added 5 to it and obtained 17 as the result.
∴ 2x + 5 = 17
⇒ 2x = 17 – 5 ...[Transposing 5 to RHS]
⇒ x = `12/2` = 6
Hence, the number 6 is thought by Anamika.
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