题目

      My  color television has given me nothing but a headache.I was able to buy it a little over a year ago  because I had my relatives give me  money for my birthday instead of a lot of clothes that wouldn’t fit.I let a salesclerk fool me into buying a discontinued model,I realized this a day later,when I saw newspaper advertisements for the set at seventy-five dollars less than I had paid,The set worked so beautifully when I first got it home that I would keep it on until stations signed off  for the night,Fortunately, I didn’t got any channels showing all-night movies 皮球和足球一共有91个，皮球和足球的比是2：5，皮球比足球少多少个？