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SSC CHSL 4 Mar 2018 Shift 1 Paper

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

Section: General Awareness

Question : 95 of 100

Marks: +1, -0

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} \times 100

\frac{100}{15}=6.67\%

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