Container A and Container B had 43 kg of sugar and 51 kg of sugar respectively. If 3 kg of sugar and 8.5 kg of sugar are added into Container A and Container B every day, how many days later will the sugar in Container A be half as much as the sugar in Container B?
that will happen after x days, where
43+3x = (51+8.5x)/2
43 + 3t = 1/2 (51 + 8.5t) = 25.5 + 4.25t
4.25t - 3t = 43 - 25.5
1.25t = 17.5
t = 14