Answer:
Monthly payment = $81.20
Step-by-step explanation:
The tires price including tax = $950
The down payment = $50
Remaining amount = $950 - $50 = $900
He has to take loan for $900
P = $900
Rate per monthly =18%/12 = 18/100 ÷12 = 0.18÷12 =0.015
n =12 months
Here we have to use the formula
Monthly payment = [p*r*(1+r)^n ÷ (1 + r)^n - 1]
= (900*0.015*(1+0.015)^12 / (1+0.015)^12 - 1)
= (13.50*1.015^12) ÷ [(1.015)^12 -1]
= 16.14 ÷ [ 1.20 -1]
=16.24 ÷0.20
= $81.20
Monthly payment = $81.20
Thank you.