Question 1132596
(3a+7)/2 = p
:
(5a+13)/2 = q
:
(4a+22)/2 = r
:
(p+q+r)/3 = (((3a+7)/2) +((5a+13)/2) +((4a+22)/2))/3 =
:
((3a+7) +(5a+13) +(4a+22))/6 =
:
(12a+42)/6 =
:
2a+7
:
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average of p, q and r is 2a+7
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