Ming De bought 57kg of sugar. He packed an equal amount of sugar into 6 bags and had 4kg of sugar left. What is the mass of sugar in each bag? Express your answer as a decimal correct to 2 decimal places.
We have
6x + 4 = 57 where x is the amount in each bag ... subtract 4 from both sides...
6x = 53 divide both sides by 6
x = 53 / 6 = 8.83 kg in each bag
+38 
