The charge, C shillings per person for a certain seminar is partly fixed and partly inversely proportional to the total number N of people. (a) Write down the expression for C in terms of N (b) When 100 people attended the charge is Kshs 8,700 per person while for 35 people the charge is Kshs. 10,000 per person (c) If a person had paid the full amount and does not attend, the fixed charge is refunded. A group of people paid but ten per cent of them did not attend. After the refund the organizer remained with Kshs 574,000. Find the number of people initially in the group.