Question
PSLE
The ratio of the number of sweaters to that of shirts in a shop was 7 : 2 at first. After 77 shirts were sold, the ratio of the number of sweaters to that of shirts became 9 : 1. What was the total number of sweaters and shirts in the shop at first?
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PSLE
The ratio of the number of sweaters to that of shirts in a shop was 7 : 2 at first. After 77 shirts were sold, the ratio of the number of sweaters to that of shirts became 9 : 1. What was the total number of sweaters and shirts in the shop at first?