Two trains 250 km apart are traveling towards each other. If each train travels at 50 km/hr, how many hours will take before the trains pass each other.
Distance = rate x time
d = rt One train rate = 50 {each train travels at 50 km/hr} time = t {assuming they leave at the same time} d = 50t {distance = rate x time} Other train rate = 50 {each train travels at 50 km/hr} time = t {assuming they leave at the same time} d = 50t {distance = rate x time} Their combined distances will add up to 250 km. 50t + 50t = 250 {added the two distances together and set equal to 250} 100t = 250 {combined like terms} t = 2.5 {divided each side by 100} They will pass each other in 2.5 hours. Ask the House
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