There is a bag of sugar in the storage room. The bag
contained 4/5 kilograms of sugar. The chef filled up an
empty can with 3/10 kilogram of sugar and then used 3/20 of
a kilogram of sugar for a cake. How much sugar was
left in the bag?
4/5 kilograms translates to 16/20 kilorams, and 3/10 kilograms translates to 6/20 kilograms, and we want to find how many grams of sugar is left so 16/20 - 9/20 = 7/20
