Answer:
$1400
Explanation:
First, converting R percent to r a decimal
r = R/100 = 9%/100 = 0.09 per year,
then, solving our equation
P = 378 / ( 0.09 × 3 ) = 1400
P = $ 1,400.00
The principal required to
accumulate interest of $ 378.00
on a rate of 9% per year for 3 years is $ 1,400.00.