Question

In which time will the simple interest on ₹400at 10% per annum be same as the simple interest on ₹1000for 4 years at 4% per annum. ​

Answer 1

Answer:

let the time is x year

so,

400.x.10/100=1000.4.4/100

40x=160

x=160/40=4

so the require time is 4 years

Answer 2

$\huge\mathfrak\green{☘︎ Solution☘︎}$

ՏIᗰᑭᒪᗴ IᑎTᗴᖇᗴՏT :

S.I = P × R × T / 1000

$\mathbb\blue{here:}$

S. I = Simple Interest

P = Is the principal

R = Is the rate of interest

T = Stand for time

$\mathbb\blue{Mentioned:}$

The simple interest on ₹400at 10% per annum.

= 400×10×t /100

= 4000t / 100

= 40t. ------------------ (1)

$\mathbb\blue{Now:}$

The simple interest on ₹1000for 4 years at 4% per annum.

= 1000×4×4 / 100

= 16000 / 100

= 160. ------------------(2)

Equate (1) and (2)

40t = 160

t = 160 / 40

t = 4

$\huge\mathfrak\red{︎︎︎Time=4years︎︎︎}$