A number is doubled and 9 is added. If the resultant is trebled, it becomes 75.

Question

A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?

Options:

A . 3.5

B . 6

C . 8

D . None of these

Answer: Option C

Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8

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