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.Management Sciences
Category: Arithmetic Mcqs
The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is_________?
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A. (mb – nc)/ (m + n) years
B. (mb + nc)/ (m – n) years
C. (mb + nc)/ (m + n) years
D. (mb – nc)/ (m – n) years
The average age of seven persons sitting in a row facing east is 28 years. If the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then find the age of the person sitting in the middle of the row?
A. 30 Years
B. 31 years
C. 26 years
D. 33 years
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The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?
A. 125
B. 134
C. 170
D. 98
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The average of first five prime numbers greater than 20 is____________?
A. 31.00
B. 31.01
C. 32.00
D. 32.2
(more…)
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