 
 <prompt> Timothy na Theresa na-akpọ ihe nkiri nke a na n'afọ. Timothy nweta ihe nkiri nke a 7 n'ime 2010 mgbe o nwere ihe nkiri nke a na 2009. Na 2009, Timothy nweta ihe nkiri nke a 24 oge. Na 2010, Theresa nweta ihe nkiri nke a n'ime iko nke Timothy, ma na 2009, o nwere ihe nkiri nke a n'ime iko nke ya. Kedu ihe nkiri nke Timothy na Theresa nweta na 2009 na 2010? <response>: N'aha 2010, Timothy jụọ 24+7 = 31 ntụkwasiaka.
N'aha 2010, Theresa jụọ 31*2 = 62 ntụkwasiaka.
N'aha 2009, Theresa jụọ 24/2 = 12 ntụkwasiaka.
N'aha 2009 na 2010, Timothy na Theresa jụọ 24+31+62+12 = 129 ntụkwasiaka.

Nke a bụ 129. 