The bar graph shows the rainfall (in mm) in a town from June to October.
What is the average monthly rainfall (in mm) of the town over these five months?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 172
The average = sum of the five monthly values ÷ 5.
Rainfall: June 120, July 280, August 240, September 160, October 60
Total \(=120+280+240+160+60=860\) mm
Average \(\displaystyle =\frac{860}{5}=172\) mm
The average monthly rainfall is 172 mm.