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

[EX Q]: Problem: a certain kind of necklace is made from 9 green , 6 white , and 3 orange beads . what is the maximum number of these necklaces that can be made from 45 beads of each color ?
[EX A]: 5

[EX Q]: Problem: if there are 200 questions in a 3 hr examination . among these questions are 100 type a problems , which requires twice as much as time be spent than the rest of the type b problems . how many minutes should be spent on type a problems ?
[EX A]: 120 mi

[EX Q]: Problem: a train 360 m long is running at a speed of 45 kmph . in what time will it pass a bridge 140 m long ?
[EX A]:
40 sec