Anyone can help me with this Math question ?

[Atomars]

A businessman borrowed $9000 from a bank on 17th May 2000 at 12% ordinary simple interest using approximate time.
After a certain time, he paid back $9372. Find the date of repayment.

Answer : 21st Sept 2000

Anyone can give me tips to solve this ?
How to get 21st Sept 2000 ?

[avatargirl]

WANT ANSWER HERE- I CAN GIVE YOU APPROXIMATE ANSWER IF YOU WANT - 12 PERCENT OF 9000 DOLLARS IS 1080 DOLLARS- SO EVERY MONTH IF YOU PAID EQUAL AMOUNTS of interest EVERY MONTH you would pay 90 dollars interest- so 4 months would be 360 dollars plus 4 days would be approximate 12 dollars- total 9372 dollars when you add on 9000 dollars you are paying back to the 372 dollars interest- hope that helps ATOMARS- IF I AM WRONG I APOLOGIZE- pray you and everyone the very best ETERNAL SALVATION and safety!

[racoonangel]

Holy crap that is complex math problem solving someproblemsinmy class are even more complex just like pascals triangle

[diehard67]

avatargirl eats complex math for breakfast. lol

[racoonangel]

lol, that's a good one diehard67

[diehard67]

it's true too, she told me just now that she didn't even use a peace of paper or a calculator, she did that in her head, and she has done more complex math then that in her head.

*grabs my head before it spins itself off my shoulders*

[Atomars]

I solved the question . Thanks for the help

12% interest rate

P x R x T

9000 x 0.12 x 1 = 1080
1080/365 days = 2.96
372/2.96 = 126.075 days

17 May 2000 + 126.075 days = 21 September 2000

[Astro Forever]

I certainly can't do that in my head, good job avatargirl!

Glad you found out, Atomars.