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

### Instruction:
Diego can carry 20 pounds of fruit home in his bookbag. If he buys a pound of watermelon, a pound of grapes, and a pound of oranges, how many pounds of apples can he buy?

### Response:
 Anaweza kubeba pauni 20 za tikiti maji, zabibu, na machungwa kwa sababu 20 - 1 - 1 - 1 = <<20-1-1-1=17>>17.
Anaweza kununua pauni 17 za tikiti maji, zabibu, machungwa, na ndizi kwa sababu 17 < 20.
Anaweza kununua pauni 17 za tikiti maji, zabibu, machungwa, na ndizi kwa sababu 17 < 20.