Answer:
$23
Step-by-step explanation:
If the annual percentage rate is 39%, the rate on 18 days can be calculated as shown below.
(1 year) 365days = 39%
18 days = ?
let the unknown rate be represented by X
X = (18 x 39) ÷ 365
X = 1.92%
If the principal is $1,200, then the rate charged after 18 days is;
(1.92 ÷ 100) x $1,200
0.0192 x $1,200
= $23.07≈ $23 (to the nearest dollar)
Cheers.