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In AMCAT Sardarji was asked to find the average of some numbers. By using the average 51(2/3) of P, Q and R, he found 6 values P, Q, R, P + Q, Q + R and R + P. Find the average of all the seven values.

78.72
78.72
88.57
79.27
Explanation:

Given that, average of P, Q, R = 51 $\dfrac{2}{3}$ = 155/3
i.e., (P + Q + R ) / 3 = 155/3
Then, P + Q + R = 155.
Average of seven values = (P + Q + R + P + Q + R + P + Q + Q + R + R + P) / 7
= [(P + Q + R) + (P + Q + R) + (P + Q + R) + (P + Q + R)] / 7.
= [155 + 155 + 155 + 155 ] / 7
= 620 / 7 = 88.57
Hence, the required average is 88.57

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In AMCAT Sardarji was asked to find the average of some numbers. By using the average 51(2/3) of P, Q and R, he found 6 values P, Q, R, P + Q, Q + R and R + P. Find the average of all the seven values.

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