Question

The mean room temperature from Monday to Saturday is 25oC and the mean room temperature of Saturday and Sunday is 28oC. if the mean room temperature from Monday to Sunday is 26oC, find the room temperature on Saturday

Answer 1

Answer: 24 °C

Explanation:

Mean =
`\frac{\text{Sum of n observations}}{n}`

Given: Mean room temperature from Monday to Saturday = 25°C

Sum of temperature from Monday to Saturday = 6 x 25°C [Total 6 days from Monday to Saturday]

= 150°C

Mean room temperature of Saturday and Sunday = 28°C

Sum of temperature of Saturday and Sunday = 2 x28°C

=56 °C

Sum of temperature from Monday to Sunday = 7 x 26°C

= 182 °C

Room temperature on Saturday = 150°C + 56 °C - 182 °C

= 24 °C

Hence, the room temperature on Saturday = 24 °C