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₹ $49$ were divided among $150$ children. Each girl got $50$ paise and a boy $25$ paise. How many boys were there ?

1. $100$
2. $102$
3. $104$
4. $105$

Let number of boys be x and number of girl be y
Then x + y = 150 -------------------(1)

25/100 x + 50/100 y = 49

x+2y=196----------------------------(2)

Solve the equations we get
x = 104
by
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