Total number of student = 8670
Total number of boys = 4545
? Total number of girls = 8670 - 4545 = 4125
? Required ratio = 4545 : 4125 = 303 : 275
The shaded region represents
y ? x
Let 45 x A = (25 x 900)/100
? A = (25 x 9)/45 = 5
CP = [100/(100 - Loss%) ] x SP
CP = 6000 x (100/75) = 8000
NA
Angle swept in 30 min= 180°
Area swept = [(22/7) x 7 x 7] x [180°/360°] cm2
= 77 cm2
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