# Problem: Amir starts riding his bike up a 200-m-long slope at a speed of 18 km/h, decelerating at 0.20 m/s2 as he goes up. At the same instant, Becky starts down from the top at a speed of 6.0 km/h, accelerating at 0.80 m/s2 as she goes down.How far has Amir ridden when they pass?

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###### Problem Details

Amir starts riding his bike up a 200-m-long slope at a speed of 18 km/h, decelerating at 0.20 m/s2 as he goes up. At the same instant, Becky starts down from the top at a speed of 6.0 km/h, accelerating at 0.80 m/s2 as she goes down.

How far has Amir ridden when they pass?