摩托车厂一月份生产50万辆摩托车，卖出30万辆，二月份又生产68万辆，现有多少万辆摩托车？0])r-e*t-d0j0k4Y;k
算式：提示,U;O*f6y;l2L-V7o0H9_8z0])r-e*t-d0j0k4Y;k
答；现有(O(b.?'E8r2U+T6y(q9i1l万辆摩托车.。0])r-e*t-d0j0k4Y;k