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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?
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- 40°
- 39°
- 38°
- 30°
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°
