Question

in a week in July the average daily temperature of Monday to Wednesday was 27 degrees and of Tuesday to Thursday was 24 degrees.if the temperature remained constant throughout

in any given day.
a. 20

b. 22

c. 18

d. 16​

Answer 1

Answer:

Step-by-step explanation:

(mon+tue+wed)/3=27;

(mon+tue+wed)=81;------(1)

(tue+wed+thu)/3=24;

(tue+wed+thu)=72;----(2)

from 1 & 2 the avg value of tue and wed should not be greater than 54 and it cannot be 48 . so the value of the temperature in thu is 18

Answer 2

Average

According to the information given,

The average daily temperature of Monday to Wednesday was $27\textdegree$ and of Tuesday to Thursday was $24 \textdegree$.

So, sum of the temperature of Monday, Tuesday and Wednesday$= 27\textdegree+ 27\textdegree+ 27\textdegree=81\textdegree$--------(I)

Sum of the temperature of Tuesday, Wednesday and Thursday$= 24\textdegree+ 24\textdegree+ 24\textdegree=72\textdegree$---------(II)

On subtracting (II) from (I), we get,

$(monday+tuesday+wednesday)-(tuesday+wednesday+thursday)=81-72\\\\\implies monday-thursday=9\textdegree$

Hence, Monday is 9° hotter than Thursday.

$\implies 27\textdegree-thursday=9\textdegree\\\\\implies 18\textdegree=thursday$

Hence, the required temperature of Thursday will be 18°.