SHELL SCRIPT TO CALCULATE SIMPLE INTEREST

echo "Enter the principle"

read p

echo "Enter the rate of interest"

read r

echo "Enter the time"

read n

i = `(expr $p \ * $n \ * $r) / 100`

echo "The interest is : " $i

Output -> Enter the principle

                   12000

                  Enter the rate of interest

                   4

                  Enter the time

                   5

                  The interest is :  2400