Question

A certain sum is invested for a certain time. It amounts to Rs
400 if the rate is 6% per annum. But when invested at a rateof 2% per annum, it amounts to Rs 250. What is the sum?

Answer 1

see take the principle as x.
so in case 1 ur intrest becomes 400-x
use the formula I=PNR

Answer 2

show me d equation....

Answer 3

ill be right back...

Answer 4

A certain sum is invested for a certain time. It amounts to Rs 400 if the rate is 6% per annum. But when invested at a rateof 2% per annum, it amounts to Rs 250. What is the sum?

Answer 5

\[400-x=\frac{ x*N*6 }{ 100 }\]

Answer 6

use this formula and find N first. then instead of 400-x use 250-x and instead of 6 add 2. then find the N. Equate d 2 N and then u will get d ans...

Answer 7

here N is time ?

Answer 8

yes

Answer 9

here they mentioned time @shrutipande per annum

Answer 10

see thats for the rate...6% every year...dats not the period for which the principle is kept...

Answer 11

k i will try

Answer 12

6Nx=40000-x,25000-x=2Nx

Answer 13

x=28750

Answer 14

insstead of multipying..keep the equations in this form.\[N=\frac{ 100(400-X) }{ 6X }\]
AND
\[N=\frac{ 100(250-X) }{ 2X }\]

Answer 15

NOW EQUATE THE N

Answer 16

its goes lengthier and lengthier

Answer 17

N=15.33

Answer 18

\[\frac{ 100(400-x) }{ 6x }=\frac{ 100(250-x) }{ 2x }\]

Answer 19

now solve this...

Answer 20

x=175

Answer 21

cool...u got it:)

Answer 22

thank u very much

Answer 23

ur welcum:)