Problem: 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 ?
Rationale: b 425 ( 68 ã · 16 ) ã — 100
annotated_formula: subtract(multiply(multiply(68, const_4), const_2), const_100)