Study the following graph which gives the production (in hundreds) of scooters and motorbikes in a factory over the years and answer the questions.
In which year, the production of motorbikes was equal to the average production of motorbikes per year during the period 2000 to 2004 ?
Average production of motorbikes per year during the period 2000 to 2004 = $$\frac{140 + 120 + 100 + 130 + 110}{5} = 120$$
Hence, in the year 2001 production of motorbikes was equal to the average production of motorbikes per year during the period 2000 to 2004.