1: If the coat is X yuan, the trousers are 3x/5 yuan, and x+3x/5=240 is x= 150, then the coat is 150 yuan and the trousers are 240- 150=90 yuan.

2. Let the total amount of money be X, then A has 3x/5 and B begins with 2x/5, which is the most available condition, 2x/5- 15=0.25x-3, and x=80.

So, in the beginning, A had 48 yuan and B had 32 yuan.

3. Assuming that a car travels x kilometers per hour, then b car travels x+ 15 kilometers per hour, and the whole journey is * * * 9 kilometers (x+ 15+x). According to the last condition, 9x=2/5 * 9(x+ 15+x), x is deduced.

Then the distance between the two places is 9 * (30+ 15+30) = 675km.