Determine the missing amounts in each of these four separate situations a through d. b d Supplies available-prior year-end $ 400 $ 2,120 $ 1,802 Supplies purchased during current year 2,800 7,208 7,808 Total supplies available 3,200 9,328 Supplies available-current year-end (850) (2,282) (800) Supplies expense for current year 1,820 13,468 8,383