If the ratio of $CI$ & $SI$ intersect for the same principle and rate of interest for $2$ years is $1.2$, find the rate of interest.

The ratio of compound interest to simple interest for two years is given by 1 plus R divided by 100, where R is the rate of interest. Given this ratio is 1.2, we write 1 plus R divided by 100 equals 1.2. Solving this equation gives R divided by 100 equals 0.2, which results in a rate of interest of 300 percent.

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