Sum of P and Q is 72 and the value of R is 42. What is the average of P, Q and R?
A
34
B
36
C
38
D
40
Correct Answer: 38
P + Q = 72; R = 42<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>∴</mo></math> P + Q + R = 72 + 42 = 114Their average = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mn>114</mn><mn>3</mn></mfrac></math> = 38