If the average of 7, 13, P and q is 17, what is the average of (p + 11) and (q

If the average of 7, 13, P and q is 17, what is the average of (p + 11) and (q - 9) ?

A 50

B 25

C 21

D 14

E None of these

Correct Answer: Option B

Solution:

প্রশ্নে বলা হচ্ছে যদি 7, 13, P এবং q এর গড় 17 হয় তবে (p + 11) এবং (q - 9) এর Average কত হবে ?

প্রশ্নমতে, \(\frac{{7 + 13 + p + q}}{4} = 17\)

=> 20 + p + q = 68

p + q = 48

(p + 11) (q - 9)

এর Average = \(\frac{{(p + 11) + (q - 9)}}{2} = \frac{{p + 11 + q - 9}}{2} = \frac{{p + q + 2}}{2} = \frac{{48 + 2}}{2} = 25\)