 
<translate> Bill na Joan na-arụ ọrụ n'ọ́bá akwụkwọ. Afọ ise gara aga, Joan nwere ahụmịhe okpukpu atọ karịa Bill. Ugbu a, ahụmahụ ya ji okpukpu abụọ karịa nke Bill. Afọ ole ka Bill nweworo ahụmahụ ugbu a? Mụ: Hmmm, ka m chee echiche. Echere m na nke a bụ ihe ngwọta zuru ezu: <eng> Lizzy: Bill and Joan both work for a library. 5 years ago, Joan had 3 times as much experience as Bill. Now she has twice as much experience as Bill. How many years of experience does Bill have now?.
Me: Hmmm, let me think. I think this is the detailed solution: 