 
 <prompt> A gara 100 bags nke chips na ncha. Na n'ala mbu, 15 bags nke chips na-achiri. Na n'ala abuo, nke bags nke chips na-achiri. A na-eme chips nke nke na-ala ato na na-ala ise. Kedu nke chips nke na-eme na n'ala ato na na-ala ise? <response>: N'ime ụbọchị abụọ, 15 x 3 = 45 bags nwere gbanwere.
N'ihi na e nwere 45 + 15 = 60 bags nwere gbanwere na ụbọchị mbụ na abụọ.
N'etiti, 100 - 60 = 40 bags nwere gbanwere na ụbọchị atọ na abụọ.
N'ile, 40/2 = 20 bags nwere gbanwere na ụbọchị atọ na abụọ.

Nke a bụ 20. 