Read the following bar diagram carefully to answer the questions given below.
Total marks scored by Narendra
= $$44 + 68 + 80 = 192$$
Total marks scored by Veena
= $$68 + 55 + 78 = 201$$
=> Difference in marks = $$201 - 192 = 9$$
$$\therefore$$ Required difference in average marks = $$\frac{9}{3} = 3$$
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