There are 720 students in an engineering college. The ratio of boys to girls is 7:5, respectively . All the students are enrollled in six different specialization viz. B. Tech. (electronics), B. Tech . (Computer science), B.Tech. (Mechanical), B. Tech. (Aerospace), B.Tech. (namo technology), B. Tech. (civil).22% of the total students are in B. Tech. (nano technology). 16% of the girls are in B.Tech. (computer science). 18% of boys are in B.Tech. (Mechanical). Girls in B.Tech.(civil) are 30% of the girsl in B. Tech. (computer science).15% of boys are in B. Tech are in B. Tech. (electronics). Boys, in B. Tech (Computer Science) are 50% of the girls in the same 15% of girls in B. Tech. (aerospace.) The ratio of boys to girls in B.Tech. (civil) is 3:1 respectively . 24% of the total numbers of students are in B.Tech. (electrnics). The ratio of boys to girls of students are in B.Tech. (electronics). The ratio of boys to girsl in B. Tech. (aerospace) is 12:5, respectively. What is the total number of girsl enrolled in B.tech. (nano technology)?

There are 720 students in an engineering college. The ratio of boys to

1.	There are 720 students in an engineering college. The ratio of boys to girls is 7:5, respectively . All the students are enrollled in six different specialization viz. B. Tech. (electronics), B. Tech . (Computer science), B.Tech. (Mechanical), B. Tech. (Aerospace), B.Tech. (namo technology), B. Tech. (civil).22% of the total students are in B. Tech. (nano technology). 16% of the girls are in B.Tech. (computer science). 18% of boys are in B.Tech. (Mechanical). Girls in B.Tech.(civil) are 30% of the girsl in B. Tech. (computer science).15% of boys are in B. Tech are in B. Tech. (electronics). Boys, in B. Tech (Computer Science) are 50% of the girls in the same 15% of girls in B. Tech. (aerospace.) The ratio of boys to girls in B.Tech. (civil) is 3:1 respectively . 24% of the total numbers of students are in B.Tech. (electrnics). The ratio of boys to girls of students are in B.Tech. (electronics). The ratio of boys to girsl in B. Tech. (aerospace) is 12:5, respectively. What is the total number of girsl enrolled in B.tech. (nano technology)?
Answer» 144 306 365 522 Solution :Number of students in the college =7200 Number of boys `=(7)/(12)xx7200=4200` Number of girls `=(5)/(12)xx7200=3000` Number of student in B.Tech. (NANO techonology) =22% or 7200=1584 Number of girlsin B. Tech. (COMPUTER science) =16% of 3000=480 Number of boys in B.Tech.(mechanical)= =18% of 4200 =630 Number of girls in B.Tech.(CIVIL) =30% of 480 =144 Number of boys in B.Tech. (electronics)=15% of 4200 =630 Number of boys in B.Tech. (computer science) =50% or 180=240 Number of giflsin B.Tech.aerospace) 15% of 3000 = 45000 Number of boys in B.Tech (civil) `=(3)/(1)xx144=432` Number of students in B.Tech (electronics) 24% of 72000 =1728 `:.` Number of girls in B.Tech. (electronics)= 1728-630 =1098 NUMBEROF boys in B.Tech (aerospace) =`(12)/(5)xx450=1080` Number of boys in B.Tech(nano technoloy) = Remaining Number of boys =4200-(750+630+240+432+1080) =4200-3138=1062 `:.` Number of girls in B.Tech (mechanical) = Remaining Number of girls =3000-(480+144+450+1098+522) = 3000-2694=306 Tablular form of above information is whon below. Number of boys enrolled in B.Tech(aerospace)=522

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