Question

If average of P and Q is 18, average of Q and R is 25 and average of P and R is 23. Then what is the average of P, Q and R?​

Answer 1

Step-by-step explanation:

Average of P and Q is 18

Sum of P and Q is 36

Average of P and R is 23

Sum of P and R is 46

Average of R and Q is 25

Sum of R and Q is 50

Sum of 2P+Q+R = 46+36 = 82

Substitute value if Q+R = 50

So 2P = 82-50 = 32

P = 32/2 = 16

P+Q+R = 16+50 = 66

Average = 66/3 = 22

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Answer 2

Step-by-step explanation:

P+Q = 36

P+R = 46

R+Q = 50

P+Q+R = 46+36=82

2P = 82 - 50 = 32

P = 32/2=16

P+Q+R = 16+50 = 66

A = 66/3 = 22