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

Problem: two trains of length 100 meters and 200 meters are 450 meters apart . they are moving towards each other on parallel tracks , at speeds of 90 km / h and 72 km / h . after how many seconds will the trains meet ?
10

Problem: the marks obtained by vijay and amith are in the ratio 8 : 5 and those obtained by amith and abhishek in the ratio of 3 : 2 . the marks obtained by vijay and abhishek are in the ratio of ?
12 : 5

Problem: if log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is :

0.6532