Question

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

Answer 1

Answer:

Step-by-step explanation:

Answer:

After 4 years.

Step-by-step explanation:

Let, after t years the simple interest on rs 400 at 10% per annum be the same as the simple interest on rs 1000 for four years at 4% per annum,

Since, The simple interest is,

S.I=P×R×T/100

Where, P is the principal amount,

r is the annual rate of interest,

t is the time ( In years ),

Thus, the simple interest on rs 400 at 10% per annum for t years,

=400×t×100/100

= 4000t/100

=40t

While, the simple interest on rs 1000 for four years at 4% per annum

=1000×4×4/100

=16000/100

=

160

Hence,

40 t = 160

⇒ t = 4 years

Answer 2

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