Question
Oscar and Tom have some money.  If Oscar gives $189 to Tom, the ratio of their money will be 2 : 5. If Oscar gives $678 to Tom, the ratio of their money will be 1: 4. How much does Oscar have?
3 m

Click button first when a symbol is required. X

Oscar and Tom have some money.  If Oscar gives $189 to Tom, the ratio of their money will be 2 : 5. If Oscar gives $678 to Tom, the ratio of their money will be 1: 4. How much does Oscar have?