1, the rest is a quarter of the sum of the first two times, which means that the rest is 1/5 of the total length, and the sum of the first two times is 4/5 of the total length. Because the first time is 3/5 of the total length and the second time's 24m is 1/5 of the total length, the total length is 24*5.

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.