The average temperature from Mon to Wed is 37°C while the average temperature from Tue to Thu is 34°C. The temperature of Thurs is \(\frac{4 }{5}\) times that of Mon. Find the temperature of Thursday.
Answer & explanation
Correct answer: option 3
The correct answer is Option 3: 36°C
\(\frac{Mon + Tue + Wed}{3}\) = 37
Mon + Tue + Wed = 37 × 3 = 111 ------(i)
\(\frac{Tue + Wed + Thu}{3}\) = 34
Tue + Wed + Thur = 34 × 3 = 102 ------(ii)
Subtract eqn (ii) from (i), we get
Mon - Thu = 9 ---------- (iii)
ATQ,
Thu = \(\frac{4}{5}\) Mon (Put this value in eqn (iii))
Mon - \(\frac{4}{5}\) Mon = 9
Mon = 45
Thu = 45 x \(\frac{4}{5}\) = 36° C