Kylie read 4 books in 1 h 58 min. She took the same amount of time to read each of the first 3 books. She took 58 min longer to read the fourth book than each of the first 3 books. She finished reading all the books at 15 47. What time did she start reading the fourth book?
Duration that Kylie took to read the first book = 1 u
Duration that Kylie took to read the second book = 1 u
Duration that Kylie took to read the third book = 1 u
Duration that Kylie took to read the fourth book = 1 u + 58 min

Total duration that Kylie took to read the four books 
= 1 u + 1 u + 1 u + 1 u + 58 min
= 4 u + 58 min

4 u + 58 min = 1 h 58 min
4 u = 118 min - 58 min
4 u = 60 min  

1 u = 60 min ÷ 4 = 15 min

Duration that Kylie took to read the fourth book
= 15 min + 58 min
= 73 min
= 1 h 13 min

1 h 13 min before 15 47: 14 34

Time that Kylie started to read the fourth book = 14 34

Answer(s): 14 34