From 2 cities. between which distance of 500 km, there were at the same time towards each other 2 trains. Speed of one train of 45 km/h. To determine speed 2 trains if trains met in 5 hours? Please! Write with explanations!

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1) 45 * 5 = 225 (km) - S 1st trains 2) 500 - 225 = 275 (km) - S 2nd trains 3) 275: 5 = (km/h). Answer: The V 2nd train of 50 km/h 123456789098771039177329181
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Answer add