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

### Instruction:
The difference between the price of an orange and the price of a pear equals the price of a banana. If the total cost of an orange and a pear is $120 and a pear costs $90, calculate the total price of buying 200 bananas and twice as many oranges as bananas.

### Response:
 Ikiwa tofauti kati ya bei ya chungwa na peazi ni bei ya ndizi, basi chungwa linagharimu $120-$90 = $<<120-90=30>>30
Ikiwa gharama jumla ya kununua ndizi 200 ni mara mbili ya idadi ya chungwa kununuliwa, basi chungwa 200*2 = <<200*2=400>>400 zinanunuliwa
Gharama jumla ya kununua 400 chungwa ni 400*$30 = $<<400*30=12000>>12000
Kwa kuongeza $12000 zaidi kwa kununua ndizi 200, jumla ya kununua ndizi 200 na mara mbili ya idadi ya chungwa kama ndizi ni $12000+$12000 = $24000