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

### Instruction:
John buys 3 barbells and gives $850 and gets $40 in change.  How much did each barbell cost?

### Response:
 Jumla ya bei ya barbells ilikuwa $850 - $40 = $<<850-40=810>>810
Hivyo kila moja iligharimu $810/3 = $<<810/3=270>>270