एक कक्षा के छात्रों का 2/7 भाग लड़के हैं । यदि लडकियों की संख्या 115 हो तो लड़कों की संख्या ज्ञात कीजिए
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Step-by-step explanation:
I m answering in english
let the total students in the class be x
no of boys = 2x /7 (ATQ)
no of girls = 115
so....
2x/7 + 115 = x
115 = x - (2x /7 )
115 = (7x -2x ) / 7
115 = 5x / 7
115 × 7 = 5x
805 = 5x
805 /5 =x
x = 161
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