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Answer:143 km/h
159 km/h
Step-by-step explanation: The 1208 km separation distance is closed in 4 hours, so the rate of closure is ...
(1208 km)/(4 h) = 302 km/h
If s represents the speed of the slower train, then the sum of their speeds is ...
s + (s+16) = 302
2s = 286
s = 143
s+16 = 159