1, according to the topic, Team A completed116 of the total engineering quantity every day, and when Team A repaired this road for 5/8, it took 10 days, that is, Team B * * * repaired 3/8, while Team B repaired 2.7 kilometers every day, so this road was total.

2. Assume that the coal content of the first pile is 12x tons, that is, the coal storage capacity of the second pile is 7x tons. So there are:

[ 12x×( 1- 1/4)]-7x = 2.4

X= 1.2, so the first batch of raw coal is 1.2 tons × 12= 14.4 tons.

3. According to the meaning of the question (the speed of the express train+the speed of the local train) ×8 hours = total distance, that is, every hour (the journey of the express train+the journey of the local train) = total distance /8, so two hours after the two cars met, the two cars * * * walked the total distance /4, and "At this time, the express train is 250 kilometers away from B and the local train is 350 kilometers away from A",

So there is a total distance-total distance /4=250+350, so it is: total distance =800 kilometers, which means the distance between Party A and Party B is 800 kilometers.