Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

The si on a certain sum at a certain rate in 3 year is 78 and the ci in 2 year is 53 .find the rate.
Asked by beheraswagatika001 | 05 Mar, 2019, 05:53: AM
answered-by-expert Expert Answer
Let p is principle and r is rate of interest
 
Simple interest : (p×3×r)/100 = 78    or    p×r = 2600 ...................(1)
 
Compound Interest : begin mathsize 12px style p open parentheses 1 plus r over 100 close parentheses squared space equals space p plus space 53 end style
begin mathsize 12px style p space plus space fraction numerator p r squared over denominator 10000 end fraction plus fraction numerator p r over denominator 50 end fraction space equals space p space plus 53 space space................... left parenthesis 2 right parenthesis

s u b s t i t u t i n g space space p r space equals space 2600 space a s space g i v e n space i n space e q n. left parenthesis 1 right parenthesis space comma space space e q n. space left parenthesis 2 right parenthesis space space i s space w r i t t e n space a s

fraction numerator 2600 cross times r over denominator 10000 end fraction space plus space 2600 over 50 space equals space 53 space space space space space space o r space fraction numerator 26 space r over denominator 100 end fraction space equals space 1 space space space space space o r space space space r space equals space 100 over 26 space almost equal to space 4
end style
Answered by Thiyagarajan K | 05 Mar, 2019, 09:37: AM
CBSE 10 - Maths
Asked by Akhandp457 | 29 May, 2023, 09:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by dimpaldihingia2 | 24 May, 2023, 06:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by akhilthainuan | 22 May, 2023, 02:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ruchipandey20071978 | 21 May, 2023, 10:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ruchipandey20071978 | 21 May, 2023, 09:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ruchipandey20071978 | 21 May, 2023, 05:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ruchipandey20071978 | 21 May, 2023, 05:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ruchipandey20071978 | 11 May, 2023, 06:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by gavhanenisha0310 | 09 May, 2023, 04:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT