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Discussion

  1. The average temperature of Monday, Tuesday, Wednesday, and Thursday was 38° C and that of Tuesday, Wednesday, Thursday and Friday was 40° C, if the temperature on Monday was 30° C, the temperature of Friday was?
    1. 40°
    2. 39°
    3. 38°
    4. 30°
  1. Correct Option: C

    From question
    M + T + W + TH = 4 x 38° = 152°
    ⇒ T + W + TH =152° – 30° = 122°

    Again from question
    ⇒ T + W + TH + F = 4 x 40° = 160°
    ⇒ F = 160° – 122°
    = 38°

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