Question 7:

a) Salmon Ltd provides you with the following information on the costs of testing the water quality of their wastewater.

	No of tests	Costs
July	30	7,315
August	25	6,500
September	34	8,120
October	28	6,990
November	32	7,950
December	31	7,445

Task

Using the high low method, calculate the fixed cost per month and the variable cost per test.