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Question 11 O pts Gribble Company's high and low level of activity last year was 00.000 units of product produced in May and 20.000 units produced in November Machine maintenance costs were $156,000 in May and $80,000 in November. Using the high-ow method, determine an estimate of total maintenance cont for a month in which production is expected to be 45.000 units $117.000 $120.000 $135,000 $144,000