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

Q: Problem: the ratio of three numbers is 2 : 3 : 4 and their sum is 180 . the second number of the three numbers is ?

A: 60
****
Q: Problem: a man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph , find his average speed for the total journey ?

A: 4
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Q: Problem: 3 / 4 of a number is 19 less than the original number . the number is ?

A:
76
****