The average height of five pupils is 68 inches. If one is 70 inches and three are 76 inches, then what is the height (in inches) of the fifth pupil?

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(A) 35
(B) 37
(C) 41
(D) 42 

🧠 Explanation:

  • Average height of 5 pupils = 68 inches.
  • Total height = 68 × 5 = 340 inches.
  • Known heights: 70 (one pupil) + 76 × 3 = 70 + 228 = 298 inches.
  • Height of fifth pupil = 340 − 298 = 42 inches.

Correct Answer: (D) 42