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

### Instruction:
 John anafuga vipepeo. Ana vikombe 4 vya vipepeo 10 kila kimoja. 40% yao hushindwa kuwa vipepeo, lakini wengine huwa vipepeo. Anauza vipepeo kwa $3 kila kimoja. Anapata kiasi gani cha pesa?


### Response:
 Ana vikombe 4*10=<<4*10=40>>40 vya vipepeo.
40*.4=<<40*.4=16>>16 hushindwa kuwa vipepeo.
Hivyo ana vipepeo 40-16=<<40-16=24>>24.
Hivyo anapata 24*3=$<<24*3=72>>72.