Question

I put $200 in a saving account with 7% interest a year. How much will i have in 19 years

Answer 1

It would be 200×0.07= 14×19= 266

Answer 2

I = PRT
P for Principle Amount
R for Rare
T for Time in years

I = 200 × 0.07 × 19        (70% = $\frac{7}{100}$ = 0.07)
  = $266 - this is the interest

You will have 200 + 266 = $466 in your account