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

### Instruction:
Jo reads at a steady pace. Her current book has 210 pages. Now, she is at page 90. An hour ago, she was at page 60. For how many hours will she be reading the book?

### Response:
 Anasoma kurasa 90-60=<<90-60=30>>30 kwa saa.
Anahitaji kusoma kurasa 210-90=<<210-90=120>>120 zaidi.
Kwa kurasa zingine 120, atahitaji masaa 120/30=<<120/30=4>>4.