Bar graph: number of trees planted in years $2018, 2019, 2020, 2021, 2022$ are $120, 150, 200, 180, 250$.…

Bar graph: number of trees planted in years $2018, 2019, 2020, 2021, 2022$ are $120, 150, 200, 180, 250$. Average number of trees per year is:
  1. $170$
  2. $180$
  3. $200$
  4. $190$

Solution

Sum $= 120+150+200+180+250 = 900$. Average $= \dfrac{900}{5} = 180$.

Asked in: IMO

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