Question
When ‘x + 5’ numbers having an average of 50 is added with ‘x + 15’ numbers having an average of ‘x + 10’, then average of all the numbers together becomes 50. Which of the following statements can be true such that
When ‘x + 5’ numbers having an average of 50 is added with ‘x + 15’ numbers having an average of ‘x + 10’, then average of all the numbers together becomes 50. Which of the following statements can be true such that
x > 5 x > 5 ?
I. The area of a square is ‘16x’ cm² and its perimeter is ‘1.6x’
cm.
II. When ‘x’ is subtracted from a positive number, then the number becomes 150 times of its reciprocal and if the number is divided by 6, then it becomes a perfect square.
III. When 1000 is divided by ‘x + 5’, then 10 is obtained as remainder.
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