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22 children were at a birthday party. Each girl drank 2 glasses of fruit punch and each boy drank

3 glasses of fruit punch. If the boys drank 31 more glasses of fruit punch, how many girls attended
the party?


Let no. of guys = x
and no of girls = y
equations formed:
x + y = 22 ----1
2y + 31 = 3x----2

on solving simultaneously,
x = 15, y = 7
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urav can u answer my question. just below it
no I dont know how to.. :c
its ok. actually it was asked in a exam called jmo. its a no. theory question. i would suggest a book to read. elementary no. theory by david m. burton.
No of girls at the party=a
no of boys at the party=b
no of glasses the girls drank=2a
no of glasses the boys drank=3b
3b-2a=31-----------(1)    ======>3b-2a=31
a+b=22-------------(2)  *2======>2b+2a=44
_______________                        _________
in equation 2
.'. no of boys=15
no of girls=7

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