04-02-2018
Mathematics

contestada

The sum of the speeds of two trains is 727.4 miles per hour. If the speed of the first train is 8.6 mph faster than the second train, find the speeds of each.

Respuesta :

04-02-2018

X+ y=727.4
8.6+x=y
X+8.6+x=727.4
2x=727.4-8.6
X=718.8/2=359.4
Y=359.4+8.6=368

Verify 359.4+368=727.4 ✔️

Train 1: 368mph
Train2: 359.4mph

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