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- Quantitative Aptitude
4.Average
medium
The average temperature from Monday to Thursday is $48^{\circ} C$ and from Tuesday to Friday is $52^{\circ} C$. If the temperature on Monday is $42^{\circ} C$, what was it on Friday? (in $^{\circ} C$)
A
$52$
B
$55$
C
$58$
D
$51$
Solution
Temperature on Monday $+$ Tuesday $+$ Wednesday $+$ Thursday $=4 \times 48^{\circ}=192^{\circ}$
Temperature on Monday $=42^{\circ}$
$\therefore \quad$ Tuesday $+$ Wednesday $+$ Thursday
$=\left(192^{\circ}-42^{\circ}\right)=150^{\circ}$
Temperature on Tuesday $+$ Wednesday $+$ Thursday $+$ Friday $=4 \times 52^{\circ}=208^{\circ}$
$\therefore$ Friday's temperature $=208^{\circ}-150^{\circ}=58^{\circ}$
Standard 13
Quantitative Aptitude
