## caitlynmcdaniel 2 years ago REWARD AND MEDAL (: 1.) Two trains leave a station at the same time, heading in opposite directions. One train is raveling at 80 km/h, the other at 90 km/h. How long will it take for the trains to be 425 km apart? -the teacher wants us to use r(t)=d using a 3 across 3 across below that chart. then do equation please....???

1. satellite73

they are travelling apart at a speed of $$80+90=170$$ mph solve $$170\times t=425$$

2. caitlynmcdaniel

what would go in the chart I said ? @satelite73

3. satellite73

i don't know anything about a chart

4. caitlynmcdaniel

we have to solve these problems by a chart 3 boxes across below that 3 boxes.. Rate times time=distance rate for each train goes in two boxes going own.. time goes into two boxes going down and distance goes in two boxes going down...??

5. itsmylife

|dw:1377816734849:dw|$Distance=speed *time$$t=\frac{ D }{ s }=\frac{ 425 }{ 80+90 }=\frac{ 425 }{ 170 }$