James has a certain amount of money. If he buys 3 pens and 2 pencils, he will have $2 left over. If he buys 2 pens and 3 pencils, he will have $6 left over. If Judith arrives with the same amount of money as James, together they can buy 6 of each and spend all their money. If a is the cost of one pen and b is the cost of one pencil, compute the ordered pair (a,b).
