3b+6n=1230

2b+2n=620, so b+n=310, and b=310-n.

So 3(310-n)+6n=1230

930-3n+6n=1230

3n=300, n=100 and b=210.

So the cost of a Cub ticket is $210, and the cost of an Indian ticket is $100.

(1) 3c + 6i = 1230

(2) 2c + 2i = 620 where c = cost for cub ticket. and i = cost for indian ticket

subtracting the (2) from (1) we get. (3) c + 4i = 610. so c =610 - 4i substituting where c = 610-4i

we get i = 100. substituting i = 100 we get c = 210

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