Determine the missing amounts in each of these four separate situations a through d. a b d Supplies available-prior year-end $ 275 1,458 $ 1,239 Supplies purchased during current year 1,925 4,957 5,557 Total supplies available 2,200 6,415 Supplies available-current year-end (725) (1,719) (800) Supplies expense for current year 1,158 8,569 6,132