As per given table , we can see that
The minimum number of student participated in extra curriculum in All 7 collages is collage A and 65 student.
From above given table ,
Total number of students in II = 100 + 200 + 200 + 100 + 100 + 100 + 100 = 900
Total number of students in I = 200 + 300 + 500 + 100 + 400 + 300 + 200 = 2000
? Required ratio = total number of students in II : total number of students in I
Required ratio = 900 : 2000 = 9 : 20
Total number of students of class IX of schools Q and R = Total number of students of class IX of (Schools Q + school R)
Total number of students of class IX of schools Q and R = 157 + 143 = 300
Total number of students of class VI of schools S and T = Total number of students of class VI of ( School S + School T)
Total number of students of class VI of schools S and T = 142 + 144 = 286
Hence, required ratio = 300 : 286 = 150 : 143
Required difference = (340 + 300 + 295 + 320 + 360) ? (350 + 225 + 185 + 200 + 240) = 1615 ? 1200 = 415.
Number of students studying in school B in 1994 = 950 + (350 ? 150) + (225 ? 115) + (185 ? 110) + (200 ? 90) = 950 + 200 + 110 + 75 + 110 = 1445.
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