 <translate> Kwuo otú e si atụgharị uche n'isiokwu ahụ, kọwaa nke ọ bụla n'ime ha, ma kwuo ihe bụ azịza ya. Grover zụtara igbe atọ nke ihe nkpuchi ihu. Ọ na-ezube ire ha $0.50 nke ọ bụla. Ọ bụrụ na igbe nke ọ bụla nwere ihe nkpuchi ihu iri abụọ, ma ọ zụrụ igbe atọ ahụ maka dollar iri na ise, ego ole ka ọ ga-erite? <hau> Bayyana tsarin tunani mataki-mataki sannan kuma amsar karshe. Grover ya sayi kwalaye uku na abin rufe fuska. Ya yi shirin sayar da su a dala 50 kowanne. Idan kowane akwati yana da abin rufe fuska 20, kuma ya sayi akwatuna 3 akan $15, nawa ne ribar da zai samu? 