Question

The mean rainfall in a city in 3 weeks is242.2cm. lf the average rainfall in the next week is 236.8, then, what is the average rainfall for all four weeks?​

Answer 1

Total rain in 3 weeks = 242.2 × 3 cm= 726.6 cm

Total rain in 4 weeks= 726.6+236.8 cm= 963.4 cm

Average = 963.4/4 cm= 240.85 cm

Answer 2

The average rainfall for all four weeks is 240.85

Step-by-step explanation:

Average = $\frac{\text{Sum of all observations}}{\text{No. of observations}}$

The mean rainfall in a city in 3 weeks is 242.2cm.

$242.2 = \frac{\text{Sum of temperature of 3 weeks}}{3}\\242.2 \times 3 = \text{Sum of temperature of 3 weeks}\\726.6=\text{Sum of temperature of 3 weeks}$

We are given that the average rainfall in the next week is 236.8

Sum of temperature of 4 weeks = 236.8+726.6=963.4

$Average = \frac{\text{Sum of temperatures of 4 weeks}}{4}\\Average = \frac{963.4}{4}\\Average = 240.85$

Hence  the average rainfall for all four weeks is 240.85

#Learn more:

https://brainly.in/question/7806051

Find the average of 40,50,60,70,80