The difference between total number of students in mechanical department and civil department is 216...........

Quantitative Aptitude ( CCS) Data Table

Study the following information and answer the questions that follow:
An engineering college has five branches as shown in the table. All the students study in these five branches. The ratio of number of boys to number of girls is given in the table and the percentage of student in any branch is also given. Some fields are blank you have to find the value as per the data given in each question and then solve the question.

The difference between total number of students in mechanical department and civil department is 216. The number of girls in mechanical department is 45 more than the number of girls in civil. Find the sum of number of boys in mechanical department and number of boys in civil department.

961

981

943

967

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Explanation:

Civil=18% , mech= 24% => 24%-18%= 216 =>6%=216
In civil 18%= 618 total students
hence boys= 405 and girls = 243
Total mechanical=24%= 24/6*216=864;
girsl in mech =243+45=288
hence boys in mechanical= 864-288= 576
Sum= 576+405=981