30% आफ स्टूडेंट्स इन स्कूल गर्ल्स इज द नंबर ऑफ बॉयज s560 हाउ मेनी गर्ल्स आर देयर इन स्कूल
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% of girls in school =30%
% of girls in the school =100-30= 70
Given
Number of boys =560
Let the total number of student be X
70/100×X =560
X= 560×100/70= 800
Numbers of boys=800-560 =240 girls .
240 girls .
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