 
 <prompt> John jiri ihe nkiri na 80. maka ihe nkiri 40 nke mbu, o jiri 90% otu. maka ihe nkiri 40 nke ndị ozo, o jiri 95% otu. Kedu ihe nkiri o jiri otu? <response>: Nke a bụ, ọ bụla 40*.9=36 ndị na-emepụta ihe gbasara n'akụkọ mbu.
Na-agba ọzọ, ọ bụla 40*.95=38 ndị na-emepụta ihe gbasara.
N'ihi na ya na-eme 36+38=74 ndị na-emepụta ihe gbasara.

Ọ bụghị anyị ga-eme 74. 