instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a cistern 5 m long and 4 m wide contains water up to a depth of 1 m 25 cm . the total area of the wet surface is :
answer:
42.5 m 2

question:
Problem: what is the sum of the numbers between 1 and 14 , inclusive ?
answer:
105

question:
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 .
answer:
16