Moana’s water company charges her a fixed quarterly sum plus a rate per unit for water used. In the most expensive quarter last year (January to March), she used 2,200 units and her bill was $275. In the least expensive quarter (July to September), she used 600 units and her bill was $167. She is now using a new filtration device which is expected to reduce her overall water usage by 20%. What can she expect his January to March bill to be next year (if there are no increases in overall tariffs)?