SSC CGL 13 Jun 2019 Shift 1 Paper

Question : 60 of 100

Marks: +1, -0

In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class?

64.8
64.4
65.2
64.6

Validate

Solution:

Required average:

\ {30 \×62+20 \×68}/{50}=64.4

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