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 $\frac{4}{5}$ th that of Monday, the temperature on Thursday was?

• A. ${35.5}^{\circ }C$
• B. ${34}^{\circ }C$
• C. ${36.5}^{\circ }C$
• D. ${36}^{\circ }C$

Answer 1

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

Let temperature on Monday be $=x^{\circ }C$, on Tuesday $=y^{\circ }C$ and on Wednesday $=z^{\circ }C$

Temperature on Thursday $=\frac{4}{5}x$
$Givenx+y+z=37\times 3=111$
$and\frac{4}{5}x+y+z=34\times 3=102$
$\Rightarrow \frac{x}{5}=9\Rightarrow \frac{4}{5}x={36}^{\circ }C$