Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Jane had a 500 page book to read. The first half of the book Jane read with a speed of 10 pages per day, and the second half with a speed of 5 pages a day. How many days did Jane spend reading this book?

### Response:
 Nusu ya kitabu inamaanisha 1/2 * 500 = <<500*1/2=250>>250 kurasa.
Jane alitumia siku 25 kusoma nusu ya kwanza ya kitabu hiki (250 / 10 = 25).
Jane alitumia siku 50 kusoma nusu ya pili ya kitabu hiki (250 / 5 = 50).
Kwa hiyo, jumla Jane alitumia siku 25 + 50 = <<25+50=75>>75 kusoma kitabu kizima.