2. From the title, it is concluded that Li Ming's money is Zhang Hai's (3/4)*(6/7)=9/ 14. If Zhang Hai's money is X, then his own solution is 9/ 14X+6/7X+X= 105.
3. The residual mass remains unchanged, which means that the 1/4 of apples is as much as 3/5 of bananas. Let the residual mass be 3, then the mass of apples is *** 12, and the mass of bananas is ***5, so the answer is 12 to 5.