To solve most questions involving rates of all kinds all we have to do is to set up an equation of the form ratio ratio. Type your numerator and denominator numbers only please into the boxes then click the button. When the amount of interest the principal and the time period are known you can use the derived formula from the simple interest formula to determine the rate as follows.
His unit rate is 2 words per second.
By signing up you agree to receive useful information and to our privacy policy. The rate is a ratio of two quantities having different units. Numerator divided by denominator. How much is paid for the use of money as a percent.