Answer:
statements 2 and 3
B
Step-by-step explanation:
The speed of shanghai magleve is 251.5 miles per hour and harmony CRH speed is 220.5 miles per hour
If it takes 2 1/2 hours going 48 mph we can figure out how many miles it was with
2 1/2*48=120
they went 120 miles to the lake
now they are going back the 120 at 40 mph
120/40=3
it took 3 hours for the return trip