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

### Instruction:
Ronald wants to make profits by re-selling some phones he bought a week ago. He bought 200 units for just $3000, and he wants to gain a third of the initial investment in profits when all units are sold. Including the profit margin, what will be the selling price for each phone?

### Response:
 Faida anayotaka Ronald ni 1/3 * $3000 = $<<1/3*3000=1000>>1000
Ili kupata $1000 kama faida, anahitaji kupata $1000 + $3000 = $<<1000+3000=4000>>4000 jumla
Atahitaji kuuza simu kwa $4000 / 200 vitengo = $<<4000/200=20>>20 kila moja