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Let P, Q, R represent mean, median and mode. If for some distribution 5 P=4 Q= R 2 , then what is P+Q 2 P+0.7 R equal to?

Options

  1. A1 12
  2. B1 7
  3. C2 9
  4. D1 4

Correct answer

D. 1 4

Step-by-step solution

5 P=4 Q= R 2 =kP= k 5 , Q= k 4 , R=2 k P+Q 2 P+0.7 R = k 5 + k 4 2 k 5 +0.7(2 k) = k ( 1 5 + 1 4 ) k ( 2 5 + 7 5 ) = 9 20 9 5 = 1 4

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