 
<translate> Mkpịsị akwụkwọ na-eri $9 karịa $2 nke bụ $9 + $2 = $11. Ọnụ ego ha bụ $11 + $2 = $13. Ya mere, azịza ya bụ 13. <eng> A pen costs $9 more than $2 which is $9 + $2 = $11. Altogether they cost $11 + $2 = $13. So, the answer is 13. 