Subject: mathqa
Question: if 12 men and 16 boys can do a piece of work in 7 days and 13 men together will 24 boys can do it in 4 days . compare the daily work done by a man with that of a boy .
Option: 
A: 1 : 3
B: 2 : 1
C: 1 : 2
D: 4 : 1
Answer: C