 
<translate> 2 / 3 nke nnụnụ ndị ahụ bụ ọkụkọ n'ihi na 1 - (1 / 3) = 2 / 3. O nwere ọkụkọ iri n'ihi na iri na ise x abụọ na atọ = iri. Ọ ga-efu $20 iji nye ha nri n'ihi na 10 x 2 = 20. Azịza ya bụ: 20. <eng> 2 / 3 of the birds are chickens because 1 - (1 / 3) = 2 / 3. He has 10 chickens because 15 x (2 / 3) = 10. It will cost $20 to feed them because 10 x 2 = 20. The answer: 20. 