The mean temperature of Monday to Wednesday was 37°C and of and of Tuesday to Thursday was 34°C. If the temperature on Thursday was 4/5 that of Monday, the temperature of Thursday was-

Answer: Option C

M + T + W = (37 × 3)°C = 111°C.....(i)
T + W + Th = (34 × 3)°C = 102°C.....(ii)
Subtracting (ii) from (i), we get:
⇒ M - Th = 9°C
⇒ M - $$\frac{4}{5}$$M = 9
⇒ $$\frac{1}{5}$$ M = 9
⇒ M = 45
∴ Temperature on Thursday
= $$\left(\frac{4}{5}\times 45\right)$$ °C
= 36°C