book Maths Puzzle Numerical Ability

Simplify: 4x>2+12x+xy+3y divided by x>3+27

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book Other Question

Suppose you invest $12,000 in two funds paying 10.5 % and 13% simple interest. The total annual interest is $1447.50. How much is invested in each fund.
Please help. 2/3 (3/2) = 1
7x + 2y= 2y + 7x