Question

The mean temperature of Monday to Wednesday was ${37}^{\circ }C$ and of Tuesday to Thursday was ${34}^{\circ }C$. If the temperature on Thursday was $\frac{4}{5}$ that of Monday, then what was the temperature of Thursday?

• A. ${36.5}^{\circ }C$
• B. ${36}^{\circ }C$
• C. ${35.5}^{\circ }C$
• D. ${34}^{\circ }C$
• E. None of these

Answer 1

The correct option is B ${36}^{\circ }C$

Here,
M + T + W = 3 $\times$ 37
= ${111}^{\circ }C$ . . . (i)
T + W + Th = 3 $\times$ 34 = ${102}^{\circ }C$ ...(ii)
On subtracting Eq. (ii) from Eq. (I), we get
M - Th = (111- 102)
= $9^{\circ }$ C
Now, $\frac{Th}{4}=9^{\circ }C$
$\therefore$ Th = 9 $\times$ 4 = ${36}^{\circ }C$