Practice mode / Age Questions What is the average (arithmetic mean) of the positive integers from 101 to 200 inclusive? A Option A: 150.5 B Option B: 155 C Option C: 145 D Option D: 160.5 E Option E: 140.2 Correct answer A. 150.5 Show answer Report a problem How we write and check questions
Question 01 / Age Questions Let X be the median and Y the mode of the following set of numbers: 15 60 30 40 60 90. What is the average (arithmetic mean) of X and Y? A Option A: 55 B Option B: 50 C Option C: 60 D Option D: 62.5 E Option E: 65 Correct answer A. 55 Show answer Open question
Question 02 / Age Questions The average weight of a group of boys and girls is 37.5 kg. The average weight of the boys is 40 kg and that of girls is 35 kg. If the number of boys is 25 find the number of girls? A Option A: 12 B Option B: 25 C Option C: 28 D Option D: 21 Correct answer B. 25 Show answer Open question
Question 03 / Age Questions The average age of a class of 40 boys is 11.95 years. The average of the class is raised to 12 years by the coming of a new boy. How old is this new boy? A Option A: 7 years B Option B: 9 years C Option C: 16 years D Option D: 14 years Correct answer D. 14 years Show answer Open question
Question 04 / Age Questions The average age of a class of 60 boys which is 11.9 years is raised to 12 years by coming of a new boy the age of the new boy is? A Option A: 27 years B Option B: 23 years C Option C: 18 years D Option D: 17 years Correct answer C. 18 years Show answer Open question
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