compound int.

A Sum of money becomes Rs. 13, 380 after 3 years and Rs. 20, 070 after 6 years on compound interest. The sum (in Rupees) ?

I know the answer.But I need explanation.This is objective type Q in competitive exam.

The answer is rs.8920/-
in Pre-Algebra Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

The growth over the last three years is 20070/13380=3/2=1.5. If this is the growth over 3 years, then the original amount must have grown at the same rate and 13380 must represent 3/2 times the original amount, which must be 2/3 of 13380=8920 rupees.

by Top Rated User (1.2m points)

Related questions

1 answer
limit int (x) [x ----> 1]
asked Sep 28, 2021 in Calculus Answers by Anonymoose | 709 views
1 answer
\int _0^4\:\left(3x^2-x^3\right)dx
asked Nov 15, 2015 in Calculus Answers by fab | 642 views
1 answer
I dont get it how you came to the next step (int 1-9)
asked Jan 22, 2015 in Calculus Answers by anushka | 641 views
1 answer
vertex, y-int., x-int, graph= -(x+1)^2+1
asked Dec 8, 2014 in Algebra 1 Answers by anonymous | 596 views
1 answer
limit int x (x --> 1/2)
asked Sep 14, 2014 in Calculus Answers by Sophia | 3.7k views
1 answer
FUTURE AMT NEEDED $2000 INT RATE 2% COMPOUNDING SEMIANNUALLY INVEST TIME 5 years
asked May 29, 2014 in Other Math Topics by Cledog Level 1 User (120 points) | 765 views
1 answer
How do you find the x int of f(x)= 4^x (+2)
asked Dec 2, 2013 in Other Math Topics by sportslover1005 Level 1 User (120 points) | 680 views
1 answer
find the x and y int of the graph of y=9x+5
asked Nov 29, 2013 in Algebra 1 Answers by anonymous | 569 views
0 answers
int f(x-c)dx=0
asked Apr 12, 2013 in Calculus Answers by anonymous | 486 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,285 answers
2,420 comments
734,801 users