Use the simple interest formula I=prt, where I is the interest, p the principal, r the annual interest rate, and t the time in years.
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If we deposit money in a savings account, the bank pays us interest for the use of our money. To calculate the interest I, we use the simple interest formula.
I= p r t, where...
I& =Interest
p& = Principal
r& = Annual interest rate
t& = Time (in years)We made a deposit of $100 in a savings account with an interest rate of 2 % = 0.02. We want to calculate the interest — how much we will earn in 6 months. We should note that one month represents 112 of a year, so 6 months correspond to 612 = 12of a year.
p= 100, r= 0.02, t= 1/2
To calculate the interest, we will substitute these values into the simple interest formula and evaluate the right-hand side.
