Question
PSLE
The ratio of the number of blazers to that of skirts in a factory outlet was 3 : 1 at first. After 21 skirts were sold, the ratio of the number of blazers to that of skirts became 10 : 1. What was the total number of blazers and skirts in the factory outlet at first?
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PSLE
The ratio of the number of blazers to that of skirts in a factory outlet was 3 : 1 at first. After 21 skirts were sold, the ratio of the number of blazers to that of skirts became 10 : 1. What was the total number of blazers and skirts in the factory outlet at first?