Question
PSLE
The ratio of the number of jackets to that of shirts in a factory outlet was 7 : 3 at first. After 80 shirts were sold, the ratio of the number of jackets to that of shirts became 9 : 1. What was the total number of jackets and shirts in the factory outlet at first?
2 m

Click button first when a symbol is required. X

PSLE
The ratio of the number of jackets to that of shirts in a factory outlet was 7 : 3 at first. After 80 shirts were sold, the ratio of the number of jackets to that of shirts became 9 : 1. What was the total number of jackets and shirts in the factory outlet at first?