The price of the book was increased by 13% to 226 rubles. What was the price of the book before the price increase?

1) Let’s determine the cost of the book as a percentage after the increase in its value, if we know that the price has risen by 13%, and the original cost was 100%.

100 + 13 = 113%.

2) Find out the initial cost of the book if we learned that the amount of 226 rubles was 113% of its original cost.

226 – 113%

X – 100%;

X = 226 * 100/113;

X = 200 rubles.

Answer: the original cost of the book was 200 rubles.