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

### Instruction:
James buys 20 coins of a cryptocurrency at $15 each.  The value of the coins increases by 2/3.  He sells coins to recoup his original investment.  How many coins did he sell?

### Response:
 Alinunua thamani ya $20*15=$<<20*15=300>>300 za sarafu
Thamani ya uwekezaji wake inaongezeka kwa $15*2/3=$<<15*2/3=10>>10 kwa kila sarafu
Hivyo kila sarafu sasa ilikuwa na thamani ya $15+10=$<<15+10=25>>25
Hivyo ameuza sarafu 300/25=<<300/25=12>>12