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

[Q]: Problem: a tyre has two punctures . the first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes . if air leaks out at a constant rate , how long does it take both the punctures together to make it flat ?
[A]: 335 min


[Q]: Problem: the total age of a and b is 12 years more than the total age of b and c . c is how many year younger than a
[A]: 12


[Q]: Problem: the cross - section of a cannel is a trapezium in shape . if the cannel is 8 m wide at the top and 6 m wide at the bottom and the area of cross - section is 700 sq m , the depth of cannel is ?
[A]:
100