tibbs283
10.12.2019 •
Mathematics
The sum of the speed of two trains is 727.7 miles per hour. if the speed of the first train is 8.3 mph faster than that of the second train, find the speed of each.
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Ответ:
2x+7.3=720.7
2x=720.7-7.3
2x=713.4
x=356.7
x+7.3=364
speed of 2nd train=356.7 mph
speed of 1st train=364 mph
Step-by-step explanation:
Ответ:
Step-by-step explanation:
0.0425 /2.5=425/25000=17/1000