1。 1717.4-0.4 =1717 The remittance received is 1%. It can be seen that it is 17 yuan, so my sister receives 1700 yuan.

2。 Let a be x, then b is 40-X.

12%x+ 14%(40-x)=5

Solution x = 30

Then Party A gets a loan of 300,000 yuan and Party B gets 654.38+10,000 yuan.