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70%of students in a school are boys and the number of girls is
504.find the number of boys in the school?

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If 70% are boys,then girls are 30%. So 30%=504 so 1%=504/30 so 70%=(504/30)* 70 = 1176. So boys are 1176

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lol, have you tried it on your own?
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ofcourse lady.maths is the only subject which i am good in.but why did u ask it?
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just for fun :)
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ok now truly tell me what's your age
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what do you think so:) just a wild guess...
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35
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oh God! i am not even twenty:)
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pls i know u are an elderly woman
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how? what yours age man???
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why should i tell u ha
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then why do you ask me also my true age? hmm...:)
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ok my fault.happy
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thats good:)
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hey.... whats your prob now? i didnt make any fault
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ok ok wait a sec.do u have any fb a/c?
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why??
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cause i'm shutting down my pc.and gonna open fb in my cell phone
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kk man:)
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k bye
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30 504
----- = -------
100 x

cross multiply to get:
30x =504 (100)

30x = 50400

1680 student total

1176 boys

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Let the number of boys to be (x) and number of whole students (boys and girls) to be (y), thus;
Since number of boys from the whole students is 70%, then it means that the number of girls is 30% (100 - 70 = 30)
Thus;
30% of (y) = 504
(30/100) y = 504
y = (504) . (100/30) = 1680
Thus number of boys and girls = 1680, number of girls = 504 and number of boys = 1680 - 504 = 1176
*To check your answer, 70% of whole number of students (1680) should give you the number of boys that we obtained (1176)..Try it.
I hope you got it, if there is anything unclear plz feel free to comment on my answer..Good Luck :)

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Hi Raffy! Merry Christmas.
Does it ever snow in Egypt? It is supposed to snow here in the American midwest. :-) Claire
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Hello Claire :)
Thank you..Merry Christmas to you too :)
No..we don't have snow here..but it is very cold, specially at cost cities..
Happy Holidays Claire :)
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