【用戶】ploplo789
【年級】高三下
【評論內容】來福年紀+小美年紀=63小美年紀=來福年紀*3/4=0.75*來福年紀來福年紀+0.75來福年紀=631.75來福年紀=63來福年紀=36小美年紀=36*0.75=27小美年紀=63-36=2736+27=6336-27=9答:兩人年紀相差(C)9歲
【用戶】ploplo789
【年級】高三下
【評論內容】設來福年紀=X 小美年紀=YX+Y=63Y=X*3/4=0.75XX+0.75X=631.75X=63X=36Y=36*0.75=27Y=63-36=2736+27=6336-27=9答:兩人年紀相差(C)9歲