Question

In grade 6, 25 out of 40 students scored above 90%, while in grade 7, 35 out of 50 students scored above 90%. In which grade did a greater proportion of students score above 90%?

• A. Grade 6
• B. Grade 7
• C. Both grades 6 and 7 have same percent of students who scored above 90%.
• D. Data insufficient.

Answer 1

The correct option is B Grade 7

Percentage of students who scored above 90% in Grade 6 = $\frac{25}{40}\times 100=62.5$
Percentage of students who scored above 90% in Grade 7 = $\frac{35}{50}\times 100=70$
$\Rightarrow$ Grade 7 has a greater proportion of students who scored above 90%.