Find a positive number, which when increased by 8 is equal to 128 times reciprocal of the number. Choices
A) 5 B) 6 C) 8 D) 7 E) 9
Explanation:   Let the number be x. Then,   x + 8 = 128 x (1/x) =&gt; x<sup>2</sup> + 8x - 128 = 0   =&gt; (x + 16)(x - 8) = 0   =&gt; x = 8   Answer: Option 8
<result>C</result>
Find a positive number, which when increased by 8 is equal to 128 times reciprocal of the number.