 
<translate> Gịnị bụ ajụjụ maka echiche a na-apụtachaghị ìhè, na azịza kwekọrọ na ya? N'ime otu awa, ọ ga-ejupụta 1/20+1/12 - 1/20=1/12 N'ihi ya, jupụta tank n'ime awa iri na abụọ Azịza ya bụ: (E) <eng> What was the question for this implicit rationale, and corresponding answer?
In 1 hour it fill 1/20 + 1/12 - 1/20 = 1/12
So fill tank fill up in 12 Hours
 The answer: (E) 