The task is to generate the correct answer for a given math problem.

Q: Problem: a starts business with rs . 3500 and after 8 months , b joins with a as his partner . after a year , the profit is divided in the ratio 2 : 3 . what is b â € ™ s contribution in the capital ?

A: 15750
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Q: Problem: danny and steve are running towards each other , each one from his own house . danny can reach steve ' s house in 25 minutes of running , which is half the time it takes steve to reach danny ' s house . if the two started to run at the same time , how much time longer will it take steve to reach the halfway point between their houses than danny to reach the halfway point between their houses ?

A: 12.5 minutes .
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Q: Problem: a train is 385 meter long is running at a speed of 45 km / hour . in what time will it pass a bridge of 140 meter length

A:
42 seconds
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