 
<translate> N'iburu n'uche usoro nke echiche, nye ajụjụ na azịza ezi uche dị na ya. Nkọwa: Ọ bụrụ n bụ ọnụọgụ ego dọla iri abụọ, mgbe ahụ 2n bụ ọnụọgụ ego dọla iri. Ya mere, nha anya ga-abụ $10 (n) + $20 (n) = $120. Site n'ijikọta okwu ndị yiri ibe ha, otu ihe ahụ na-aghọ 40n = 120. N'ihi ya, uru nke n nke na-anọchi anya ọnụ ọgụgụ nke 20 dollar bụ 120 / 40 = 3.  Ajụjụ na azịza: <eng> Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: If n is the number of $20 bills then 2n is the number of $10 bills. So the equation will be $10(2n) + $20n = $120. By combining like terms, the equation becomes 40n = 120. So, the value of n which represents the number of $20 bills is 120 / 40 = 3.
 The question and answer: 