Question

A train leaves little​ rock, arkansas, and travels north at 85 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 660 kilometers​ apart?

Answer 1

s1 = 85 km/h

s2 = 80 km/h

t =?

d= 660

t=d/s

t= 660/(85-80) = 132 hour