Answer:
5.40 is not the same as 7.00
Step-by-step explanation:
Let s be the slow train, and s+22 be the faster one. Then:
976/s+s+22=4
976=8s+88
8s=888
s=111 kph as the slower train
s+22=133 kph as the faster train
☺☺☺☺
Answer:

Step-by-step explanation:
Part A: 1 7/9
Part B: ????
Sorry I don't get it