Question

plzzzzz answer

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Answer 1

Average rainfall for those 5 years = 900 + 650 + 450 + 733 + 400/5

                                                         = 626.6mm.


Hope this helps!

Answer 2

average = sum of observation / no.of observation

average = (900+650+450+733+400) / 5
= 1550+850+733/5
= 3133/5
= 626.6 mm is the average