Party A's interest: X * 5.5% * (1-5%),

Party B's interest: (20-x) * 4.5% * (1-5%),

Column equation: x * 5.5% (1-5%)+(20-x) * 4.5% (1-5%) = 0.76.

X =- 10 (ten thousand)

So, 20-x=30.

Borrow 654.38 million yuan from Party A and deposit 300,000 yuan from Party B (I feel there is something wrong with the subject).

2. solution: let the two forms of interest rate be x and y.

From the meaning of the question: x+y = 3.24%

2000 * X( 1-5%)+ 1000 * Y( 1-5%)= 43.92

X=0.0 14= 1.38%。

Y=0.0 184= 1.86%