Question
In the book shop, 13 of the books sold were English books. 13 of the remaining books sold were Science books. The ratio of the number of Science books sold to the number of Math books was 10 : 3. The number of Chinese books sold was 204. How many books were sold altogether?
4 m

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In the book shop, 13 of the books sold were English books. 13 of the remaining books sold were Science books. The ratio of the number of Science books sold to the number of Math books was 10 : 3. The number of Chinese books sold was 204. How many books were sold altogether?