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

### Instruction:
 Kitabu kipya cha Jiometri kina kurasa 450 ambazo ni kurasa 230 chini ya mara mbili ya kurasa za kitabu cha zamani. Kitabu cha zamani cha Jiometri kilikuwa na kurasa ngapi?


### Response:
 Hebu x iwe idadi ya kurasa za kitabu cha zamani cha Jiometri
Kitabu kipya cha Jiometri kina mara mbili ya idadi ya kurasa za kitabu cha zamani-230= 2x -230 =450 kurasa
2x = 450+230 = 680
x = <<340=340>>340 kurasa