mam bakit wla sa choices ung sagot po???? base po sa Given [C=12 and D = ? T/Together = 4 ] (12x4=48) / (12-4=8) = 6 hours ^^, the answer po.... hindi po kaya ung word na THIRD is 3 hours??? if the word THIRD is 3 hours may sagot po.. [C=12 and D = ? T = 3] D = (12x3=36) / (12-3=9) = 4 hours... nakakaconfuse po mam hahahaha