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

### Instruction:
You can buy 4 apples or 1 watermelon for the same price. You bought 36 fruits evenly split between oranges, apples and watermelons, and the price of 1 orange is $0.50. How much does 1 apple cost if your total bill was $66?

### Response:
 Ikiwa unanunua matofaa 4 kwa bei ya tikiti maji 1, basi 36/4 = <<36/4=9>>9 tikiti maji hufanya matunda 36.
Bei ya tikiti maji 1 ni kwa hivyo 36/9 = $4.
Tufaha 1 ni kwa hivyo $4/4 = $1.