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Jabalsad · Answer 1 · 2018-12-29T14:26:47+0000

For the first one ,

Let no. Of child be x
And adults are y

So, 210x+315y=2205
And other eqn will be, X+y= 9

By solving, x=6 , and thus y will be 3

So, no of children are 6 and no of adults are 3 !!

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