Level 3
When Mrs Yang was 45 years old, her son was 2 times her daughter's age. Mrs Yang would be twice her son's age when her daughter was 30 years old. How old would Mrs Yang be when her daughter was 18 years old?
Level 3
Oscar is 3 times as old as his brother. In 14 years' time, Oscar will be 10 years less than twice of his brother's age. How old was Oscar 2 years ago?
Level 3
Fred and Tim went shopping with a total amount of $225. They had $175 left after shopping. Fred's remaining money was 3 times the amount he paid for. Tim's remaining money was 4 times the amount he had spent.
Level 3
Mrs Lin has some candies and cupcakes. If she packs a candy and a cupcake in each bag, there will be 82 cupcakes left. If she packs 2 candies and 3 cupcakes in each bag, there will be 34 candies left. How many candies and cupcakes does she have in all?
Level 3
There are some blue and yellow marbles in a container. If 10 blue marbles are removed from the container, the total number of marbles left will be 8 times the number of blue marbles left. If 5 yellow marbles are removed from the container, the total number of marbles left will be 5 times the number of blue marbles. How many marbles are there in the container?
