Read the following question and decide which of the given statements is/are sufficient.
In a class of 50 students, how many girls scored above 80% in Maths?
Statements:
1. Exactly four boys scored above 80% in Maths.
2. One-third of the class scored above 80% in Maths.
correct answer should be :
Both 1 and 2 together are sufficient to answer the question.
In a class of 50 students
Statements I
1. Exactly four boys scored above 80% in Maths.
it means that 46 students scored less that 80%. from this statement we can conclude any colusion
2. One-third of the class scored above 80% in Maths.
Ā Ā Ā Ā One-third of 50 = 16.33 which means 16 students scoredĀ above 80% in Maths. from this statement we can conclude
but by combining both
16 students including 4 boys scoredĀ above 80% in Maths.
so 12 girls scoredĀ above 80% in Maths.
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