 
 <translate> Anna is reading a 31-chapter textbook, but she skips all the chapters that are divisible by 3. If it takes her 20 minutes to read each chapter, how many hours does she spend reading total? Think carefully first, then make a decision: <hau> Anna tana karanta littafi mai surori 31, amma ta tsallake dukan surori da za a iya raba su da 3. Idan ta ɗauki minti 20 kafin ta karanta kowanne babi, awa nawa ta yi ta karanta duka? Ka yi tunani sosai da farko, sannan ka yanke shawara: 