PROBLEM 3-15 High-Low Method: Predicting Cost [LO1, LO3] Sawaya Co., Ltd., of Japan is a manufacturing company whose total factory overhead costs fluctuate considerably from year to year according to increases and decreases in the number of direct labor-hours worked in the factory. Total factory overhead costs (in Japanese yen, denoted Y) at high and low levels of activity for recent years are given below: Level of Activity Low High 75,000 50,000 14,250,000 Total factory overhead costs 17,625,000