The bar chart shows the marks distribution in am English test. What percentage of the students had marks ranging from 35 to 50?
Attached Figure / Diagram
A
55\(\frac{1}{3}\)%
B
60%
C
65%
D
66\(\frac{2}{3}\)%
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Percentage of students with marks ranging from 35 to 50 = \(\frac{f_{35} + f{40} + f{50}}{\sum f}\)
= \(\frac{35 + 40 + 45}{20 + 35 + 40 + 45 + 25 + 15}\) x 100%
= \(\frac{120}{180}\) x 100%
= 66\(\frac{2}{3}\)%
Source: Myschool Past Questions Archive (Record #36600)