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A teacher has partial data of the student result:

SexGrade AGrade BGrade CTotal
Girls40
Boys5
Total30

The other information available is:

  1. Half the students have grade A and B
  2. 50%50 \% of the students are girls
  3. 14\frac14th of boys have grade C

Number of boys who have grade B and the number of boys who have grade C are:

Solution

Correct Option: 1
SexGrade AGrade BGrade CTotal
Girls553040
Boys5251040
Total10304080

According to the information, this is the completed table. Hence, Option 1 is the answer.

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