Lokacin Karatu: 6 minti A duk faɗin duniya, tipping yana da bambance bambancen ra'ayi da ayyuka, misali: Ana buƙatar faɗakarwa a Afirka ta Kudu, kamar yadda yake a cikin Amurka. Ana sa ran barin ɗan tsakanin 15 da kuma 25% a Amurka, kuma idan bakayi ba zaka iya sosai…