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

[EX Q]: Problem: two cubes have their volumes are in the ratio 1 : 27 . find the ratio of their surface area ?
[EX A]: 1 : 9', 'd ) 2 : 7', 'e ) 3 : 11'

[EX Q]: Problem: the mean daily profit made by a shopkeeper in a month of 30 days was rs . 350 . if the mean profit for the first fifteen days was rs . 255 , then the mean profit for the last 15 days would be
[EX A]: rs . 445

[EX Q]: Problem: you have been given a physical balance and 7 weights of 40 , 42 , 36 , 33 , 47 , 52 and 67 kgs . keeping weights on one pan and object on the other , what is the maximum you can weigh less than 169 kgs .
[EX A]:
16