If the average of 7, 13, p and q is the average of (p+11) and (q-9)?
Solution
Correct Answer: Option B
Average, (7+13+p+q) /4 = 17
Or, 20+p+q = 68
or, p + q =48
Again, average = (p+11)+(q-9)/2
= (p+q+2)/2
= (48+2)/2
= 25
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