Solve it as it is its fine if its get negative

Month Sales ($) Materials (S) Wages ($) Production ($) Admin. Selling, etc (S) June 3,000 1,800 650 225 160 July 3,250 2,000 750 225 160 Aug 3,500 2,400 750 250 175 Sep 3,750 2,250 750 300 175 Oct 4,000 2.300 800 300 200 Nov 4,250 2,500 900 350 200 Dec 4,500 2,600 1,000 350 225 1. prepare cash budget for 6 months july to december 2. credit allowed by suppliers 1 month 3. credit allowed to customers 2 months 4. lag in payment of wages and all other overheads 1 month 5. opening cash balance on 1st july OMR 1500 6. income tax paid in september OMR 200