Question
Three cartons, C, A and B, contained 418 marbles. Oscar added some marbles into Carton C and the number of marbles in Carton C tripled. He took out half of the number of marbles from Carton A and removed 98 marbles from Carton B. As a result, the ratio of the number of marbles in Carton C, Carton A and Carton B became 9 : 4 : 5. What was the ratio of the number of marbles in Carton B to the total number of marbles in Carton C and Carton A at first? Give the answer in its lowest term.
4 m

Click button first when a symbol is required. X

Three cartons, C, A and B, contained 418 marbles. Oscar added some marbles into Carton C and the number of marbles in Carton C tripled. He took out half of the number of marbles from Carton A and removed 98 marbles from Carton B. As a result, the ratio of the number of marbles in Carton C, Carton A and Carton B became 9 : 4 : 5. What was the ratio of the number of marbles in Carton B to the total number of marbles in Carton C and Carton A at first? Give the answer in its lowest term.