On 1st June, Delyth budgets for her next electricity bill.
This bill will be for the months of June, July and August.
Her bill will have to be paid at the beginning of September.

She knows:
• the standing charge is £8 per month,
• her meter reading on 1st June is 20150 kWh,
• her estimate for her meter reading on 31st August is 20950 kWh,
• her agreement states that electricity costs 23 p per kWh,
• VAT at 5% is payable on the total of the standing charge and the cost of the electricity used.

Calculate how much she should budget each month so that she is able to pay her next electricity bill.