Course Total number of students who have enrolled for the course Percentage of students who have enrolled for the given courses from different colleges P Q R S C++ 2000 26 20 19 35 Java 2400 27 30 25 18 Linux 1500 32 20 25 23 SQ. 1800 24 32 28 16 Coco SD 2800 21 20 21 38 What is the respective ratio between the total number of students who have enrolled for course on Java and SQL together from college P and the total number of students who have enrolled for the same courses together from college S?
A) 2 : 1
B) 3 : 1
C) 3 : 2
D) 5 : 3
E) 4: 3
Correct Answer: C
$ \therefore $ Total number of students for Java and SQL from college $ P=648+432=1080 $ Number of students for Java from college S $ =2400\times \frac{18}{100}=432 $ Number of students for SQL from college S $ =1800\times \frac{16}{100}=288 $
$ \therefore $ Total number of students for Java and SQL from college $ S=432+288=720 $
$ \therefore $ Required ratio $ =\frac{1080}{720}=\frac{108}{72}=\frac{36\times 3}{36\times 2}=\frac{3}{2}=3:2 $
BETA
