simple interest

Hello, pumpkinslion!

Exactly where is your difficulty?

    \displaystyle \;\;You don't know the formula?
    \displaystyle \;\;You know the formula, but don't know how to use it?
    \displaystyle \;\;You know the formula and how to use it, but can't do arithmetic?
    \displaystyle \;\;You know the formula, how to use it, and got an answer,
        \displaystyle \;\;\;\;but you want someone to check your answer for you?

Find the simple interest if the principal is $360, rate is 6% and the time is 1 1/2 years
Simple interest formula: I  =  P×r×t\displaystyle \,I\;=\;P\,\times\, r\,\times\,t
where: P\displaystyle P is the principal amount of the loan.
            r\displaystyle \;\;\;\;\;\;r is the interest rate (per year)
            t\displaystyle \;\;\;\;\;\;t is the time of the loan (in years).

Therefore: I  =  $360×0.06×32  =  $32.40\displaystyle \,I\;=\;\$360\,\times\,0.06\,\times\,\frac{3}{2}\;=\;\$32.40
 
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