यदि एक विधालय में 70% लड़के तथा 255 लड़कियों की संख्या है तो लड़को का संख्या क्या होगा?
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4
Answer: 595
Step-by-step explanation:
Suppose number of boys = x
We know that
Number of girls = 255
Percentage of the boys = x/x+255
70% = x /x+255
70/100 = x/ x+255
70x + 17850 = 100x
30x = 17850
x = 17850/30
x = 595
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