Answer : The duration of the loan is, 6 months
Step-by-step explanation :
First we have to determine the discounted money.
Discounted money = $850 - $800 = $50
Thus, interest = $50
Now we have to determine the time of loan.
Formula used :
[tex]S.I=\frac{PRT}{100}[/tex]
where,
P = principle
R = interest rate
T = time
S.I = simple interest
Now put all the given values in the above formula, we get:
For 1 year : [tex]\$50=\frac{(\$850)\times (12)\times T}{100}[/tex]
For 12 months : [tex]\$50\times 12=\frac{(\$850)\times (12)\times T}{100}[/tex]
[tex]T=5.88month\approx 6month[/tex]
Thus, the duration of the loan is, 6 months