Exercise 3-4 Determining cost flows through accounts LO P1 Determine the missing amounts in each of these four separate situations a through d. d $ 1,260_ Supplies available-prior year-end Supplies purchased during the current year Total supplies available Supplies available-current year-end Supplies expense for current year 3,000 400 $ 2,800 3,200 (650) b 1,200 $ 6,500 7,700 (1,350) 8,400 (700) 4,588 1,200