The organisers of a teachers' conference provided a buffet lunch made by a catering service.


The catering service made a total of 560 cups of tea and coffee.

These were served in the ratio

5

:

3

respectively.


The catering service billed the coference organise £1 for each cup of tea and £1. 50 for each cup of coffee served.


How much was the total bill for the tea and coffee?