Question

A sum becomes 4 times at simple interest in 10 years. What is the rate of interest?
A.0.1
B.0.2
C.0.3
D.0.4

Answer 1

Heya !

Here is your answer =>

Answer: option C


Let rate is R%.

Now,

P = 100;

A = 400;

I = 400-100 = 300;

Time, T = 10 years;

I = PTR/100;

Or, R = (100*I)/PT;

Or, R = (100*300)/(100*10);

Hence, R = 30%

Hope this helps you

Answer 2

★${\bf{Hey..!!}}$★

A sum becomes 4 times at simple interest in 10 years. What is the rate of interest?
A.0.1
B.0.2
C.0.3✔✔✔
D.0.4

Let rate is R%.
Now,
P = 100;
A = 400;
I = 400-100 = 300;
Time, T = 10 years;
I = PTR/100;
Or, R = (100*I)/PT;
Or, R = (100*300)/(100*10);
Hence, R = 30%