Subject: mathqa
Question: a green grocer received a boxful of tomatoes and on opening the box found that several had gone bad . he then counted them up so that he could make a formal complaint and found that 68 were mouldy , which was 16 per cent of the total contents of the box . how many tomatoes were in the box ?
Option: 
A: 275
B: 336
C: 235
D: 425
Answer: D