Question
PSLE
The ratio of the number of vanilla buns to mocha buns is 2 : 7. The ratio of the number of matcha buns to the total number of vanilla buns and mocha buns is 3 : 1. What fraction of the buns are mocha buns?
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PSLE
The ratio of the number of vanilla buns to mocha buns is 2 : 7. The ratio of the number of matcha buns to the total number of vanilla buns and mocha buns is 3 : 1. What fraction of the buns are mocha buns?