 
 <prompt> N'okpuru nke ahụ, ụlọ ọnụ Laker cement na-akpọ 500 mkpụrụokwu cement na-achọ Mr. Zander na $10 nke mkpụrụokwu. Mr. Zander kwesịrịrị iche ụgbọala sand, iche na-eme 10 tons nke sand, na-achọ na $40 nke ton. Kedu kwa ego Mr. Zander jiri maka ha na-eme ihe ọnụ ahụ? <response>: ```Nke ọnụahịa nke sand bụ $5000
N'ihi na ọnụahịa lọrị bụ 10 tons nke sand, iri lọrị na-eme 20 lọrị gụnyere 20*10 = 200 tons.
Na $40 nke ton, Mr. Zander jiri $8000 maka sand nke ọnụahịa ya na-eme na site ya nke ọnụahịa.
Site na-eme, Mr. Zander jiri $8000+$5000 = $13000 maka ọnụahịa nke ọnụahịa ya.

Ọ bụghị ihe ọ bụla bụ 13000.``` 