Instructions

Study the following table carefully and answer the questions given below it. Number of students enrolled in 4 different courses of a college during the given years


Question 31

What was the average number of boys studying in all four courses of the college in the year 2010?

Solution

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Total number of boys studying in all four courses of the college in the year 2010

= (840 - 378) + (1200 - 660) + (952 - 342) + (900 - 540)

= 462 + 540 + 610 + 360 = 1972

=> Average = $$\frac{1972}{4}$$ = 493

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