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

### Instruction:
At a school, 40% of the students receive a free lunch. These lunches are paid for by making sure the price paid by the paying students is enough to cover everyone's meal. If it costs $210 to feed 50 students, how much do the paying students pay for lunch?

### Response:
 Ikiwa 40% ya wanafunzi hupata chakula cha mchana bure, na 100-40=<<100-40=60>>60% ya wanafunzi hulipa kwa chakula cha mchana, kuna wanafunzi 50*60/100=<<50*60/100=30>>30 wanaolipa kwa chakula cha mchana.
Wanafunzi hawa hulipa $210/30=<<210/30=7>>7 kwa chakula chao cha mchana.