Question

The following number line shows the temperature in degree Celsius ${(}^{o}C)$, at different places on a particular day. Find P, Q and R.
(i) The temperature difference between the hottest and the coldest places is $\underset{–}{P}$.
(ii) The temperature difference between Yamuna Nagar and Pathankot is $\underset{–}{Q}$.
(iii) The temperature difference between Pathankot and Kashmir is $\underset{–}{R}$.

• A. P-${31}^o$C, Q-$8^o$C, R-$5^o$C
• B. P-${30}^o$C, Q-${18}^o$C, R-$6^o$C
• C. P-${31}^o$C, Q-${18}^o$C, R-$6^o$C
• D. P-${30}^o$C, Q-$7^o$C, R-$8^o$C

Answer 1

Answer: (C)

P-${31}^o$C, Q-${18}^o$C, R-$6^o$C

Difference in temperature between the hottest and coldest places $={24}^o$C$-(-7{)}^o$C $=(24+7{)}^{o}C={31}^o$C
(ii) Difference in temperature between Yamuna Nagar and Pathankot
$={17}^{o}C-(-1{)}^{o}C=(17+1{)}^{o}C={18}^o$C
(iii) Temperature difference between Pathankot and Kashmir $=-1^{o}C-(-7{)}^{o}C=(-1+7{)}^o$C$=6^o$C.