Question
A bag contains yellow and brown marbles in the ratio of 3 : 7. There is a total of 140 marbles in the bag. How many more yellow marbles must be added into the bag so that the number of yellow marbles will be the same as the number of brown marbles?
2 m

Click button first when a symbol is required. X

A bag contains yellow and brown marbles in the ratio of 3 : 7. There is a total of 140 marbles in the bag. How many more yellow marbles must be added into the bag so that the number of yellow marbles will be the same as the number of brown marbles?