Question 6

Four numbers. a, b, c and d, are such that their overall average is 26.5. The average of a and b is 20. The average of c and d is:

Solution
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$$\ \frac{\ a+b+c+d}{4}=26.5\ and\ \ \frac{\ a+b}{2}=20$$

by solving above we can find c+d=66

so average of c and d is 33,

Hence option 'C' is correct.

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