 
<translate> Karatun kashi 60 cikin dari ya fi sauri yana nufin ɗan'uwan John yana ɗaukar 1 +.6 = 1.6 sau da yawa fiye da John don karantawa. Don haka John ya karanta littafi a cikin 8 / 1.6 = 5 hours. Saboda haka zai ɗauki John 5 * 3 = 15 hours don karanta littattafai 3. Amsar ƙarshe ita ce: 15. <eng> Reading 60% faster means John's brother takes 1 + .6 = 1.6 times as long as John to read. So John reads a book in 8 / 1.6 = 5 hours. So it would take John 5 * 3 = 15 hours to read 3 books. The final answer: 15. 