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

### Instruction:
 Mary anataka kupanda roller coaster refu zaidi duniani, Kingda Ka. Urefu wa chini wa kupanda roller coaster ni 140 cm. Kaka yake Mary ana urefu wa 180 cm, Mary ana urefu wa 2/3 ya kaka yake. Anaongeza sentimita ngapi zaidi ili aweze kupanda Kingda Ka?


### Response:
 Kwa kuwa ana urefu wa 2/3 ya urefu wa kaka yake, Mary ana urefu wa 180 * 2/3 = <<180*2/3=120>>120 cm.
Ili afikie urefu wa chini na aweze kupanda Kingda Ka, Mary anahitaji kuongeza sentimita 140 - 120 = <<140-120=20>>20 cm.