Rishi bought a magazine for Rs. 784 which included GST of 12% . What was the price of the magazine before GST was included?

$$\begin{gathered} GST = 12\% \\ Suppose the actual price of magazine is Rs.100 \\ So, 12\% of 100 = Rs.12 \\ On including GST of Rs.12 to Rs.100, \\ the price of magazine = Rs.100 + Rs.12 = Rs.112 \\ So, when the selling price is Rs.112 the actual price = Rs.100 \\ For Rs.1, the actual price = Rs.\frac{100}{112} \\ For Rs. 784, the actual price = Rs.\frac{100}{112} x 784 = Rs.700 \\ Therefore, the original price of the magazine before GST was included was Rs.700. \end{gathered}$$