<prompt> Translate the following text to EnglishVituo vya bar vimegawanywa kutoka darasa la kwanza hadi la tatu na kulipa kwa mujibu; bei daima ni pamoja na huduma, lakini ndogo 5 tip ni kawaida.  <response>: Bars are graded from first to third class and charge accordingly; prices always include service, but a small 5 percent tip is usual. 