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The bar graph shows average marks scored in a 100 marks Science exam by students of 7 divisions of Standard X. Study the diagram and answer the following questions.
Average Science Marks
Division
Question 95
If all students of Division A lost 5 marks each for indiscipline then their new average marks would decrease by how much?
Solution
Current average marks of all students of Division A = 75
If all students of Division A lost 5 marks each, then new average marks = 75-5 = 70
=> Required % decrease = $$\frac{(75-70)}{75}\times100$$
= $$\frac{100}{15}=6.67\%$$
=> Ans - (C)
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