# What is the temperature of the last day

The average temperature of the first 3 days of a week is 26.5^{0 }C and that of the next 3 days is 29^{0 }C. If the weekly average is 27.4^{0 }C, What is the temperature of the last day:

- 26.8
^{0}C - 24.8
^{0}C - 25.3
^{0 }C - 25.2
^{0}C

**Answer: (3) 25.3 ^{o}C**

**Explanation:-
**The average temperature of the first 3 days of a week = 26.5

^{o}C

Then, the total temperature of first 3 days of a week = 3 x 26.5

= 79.5

^{o}C

The average of next 3 days of the same week = 29^{o}C

Then, the total temperature of the next three days = 29 x 3

= 87^{o}C

The average temperature of the week = 27.4^{o}C

Then, the total temperature of the week = 7 x 27.4

= 191.8^{o}C

Then, the temperature of the last day = 191.8 – (87 + 79.5)

= 25.3^{o}C

Hence, the answer is (3) 25.3^{o}C.