
Math General Math Forum  For general math related discussion and news 
 LinkBack  Thread Tools  Display Modes 
July 24th, 2017, 06:56 AM  #1 
Newbie Joined: Jul 2017 From: India Posts: 3 Thanks: 0  Interest
What is rate of interest if principal amount is double n time is 25/4 yr?
Last edited by skipjack; July 24th, 2017 at 10:27 AM. 
July 24th, 2017, 07:14 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,675 Thanks: 1337 
for simple interest ... $2P=P(1+r)^{25/4}$ $r=2^{4/25}1 \approx 0.117 \implies$ interest rate is about 11.7% 
July 24th, 2017, 07:42 AM  #3 
Newbie Joined: Jul 2017 From: India Posts: 3 Thanks: 0 
Thanks@skeeter
Last edited by Khyati Thakkar; July 24th, 2017 at 07:45 AM. 
July 24th, 2017, 09:33 AM  #4 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,045 Thanks: 720  
July 24th, 2017, 10:04 AM  #5 
Global Moderator Joined: Dec 2006 Posts: 18,232 Thanks: 1437  
July 24th, 2017, 10:25 AM  #6 
Math Team Joined: Jul 2011 From: Texas Posts: 2,675 Thanks: 1337  
July 24th, 2017, 10:27 AM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,045 Thanks: 720 
Probably means "double in time".... which is still obscure anyway!! 
July 24th, 2017, 09:12 PM  #8 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 1,512 Thanks: 120 Math Focus: Trigonometry and Logarithm 
Or 2 x n.


Tags 
interest, maths 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Simple Interest: How to find the actual interest rate?  grace25  Elementary Math  12  January 24th, 2013 09:46 PM 
Interest  jeanjake  Algebra  2  October 3rd, 2012 05:42 AM 
Simple interest/Compound interest  Qwertyqwerty  Elementary Math  2  September 20th, 2011 11:41 PM 
Calculate interest rate based on interest in parcels  douglasrac  Economics  0  February 17th, 2011 10:14 AM 