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Question

Mark the correct alternative in the following question:

Twice a number when increased by 7 gives 25. The number is

(a) 7 (b) 9 (c) 10 (d) 8

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Solution

Let the number be x.As, twice the number when increased by 7 gives 25.2x+7=252x=25-7 By transposing 7 to RHS2x=18x=182 By transposing 2 to RHS x=9

So, the number is 9.

Hence, the correct alternative is option (b).

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