Question

How much simple interest would x dollars earn in 13 months at a rate of r percent

Answer 1

Answer:

$I=\frac{13xr}{1,200}$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Simple interest Value

P is the Principal amount of money to be invested

r is the rate of interest  in decimal form

t is Number of Time Periods in years

in this problem we have

$t=(13/12)\ years\\ P=\ x\\r=(r/100)$

substitute in the formula above

$I=x(r/100)(13/12)$

$I=\frac{13xr}{1,200}$