Question

A merchant sold four types of products P, Q, R, and S. He sold products P and Q in the ratio of 3:4, while he sold products R and P in the ratio of 7:3. The price of each product R is Rs. 14, and each product Q is Rs. 11. The total revenue earned from selling all the product R is Rs. 196 more than the total revenue earned from selling all the products Q. Find the number of products P sold by the merchant.

A 10.8
B 12
C 14.2
D 20
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