Directions : Read the following information carefully and answer the…
2019
Directions : Read the following information carefully and answer the questions.
There are some students (male + female) in Class A and Class B in CCA School. In class A, females are 30% of total students of class A. In class B, number of male and female students are equal and male students in class B are thrice the number of female students of Class A.
If male students passed in Class A and Class B are in ratio 1:3 respectively and failed male students of class A and Class B are equal, then total male students who got passed from both classes together are what percent of total students of both the classes?
- A.
9 ¹/₁₁%
- B.
11 ¹/₉%
- C.
14 ²/₇%
- D.
8 ⅓%
- E.
6 ⅔%
Show answer & explanation
Correct answer: C
Let Class A total students be T. Class A has 0.3T females and 0.7T males. Class B has male students equal to three times Class A females, so Class B males = Class B females = 0.9T. If male passes in A and B are in the ratio 1:3 and failed males are equal, the passed males are 0.1T and 0.3T. Total passed males = 0.4T, while total students in both classes = 2.8T. Percentage = 0.4/2.8 x 100 = 14 2/7%.