# Aptitude - Simple Interest - Discussion

Discussion Forum : Simple Interest - General Questions (Q.No. 10)

10.

A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:

Answer: Option

Explanation:

Principal = Rs. | 100 x 5400 | = Rs. 15000. | ||

12 x 3 |

Discussion:

31 comments Page 1 of 4.
Ganesh appu said:
8 years ago

This case can be approached in an easier way with the help of options. For one year 12 percent interest then for 3 years it would b 36 percent. Therefore (36 percent of ---------= 5400) is the answer. 36 percent of 15000 is 5400 so option c is the answer.

Srikanth Duppada said:
1 decade ago

For 1 year 12% then for 3 years 36%(12+12+12)(this is only for S.I not for C.I).

Take 100 as principal then 36 rs interest for 100 then,

5400..............?(Principal).

(5400/36)x100 = 15000.

Take 100 as principal then 36 rs interest for 100 then,

5400..............?(Principal).

(5400/36)x100 = 15000.

AKATUKUNDA said:
10 months ago

Interest= principal * rate * time.

5400 = principal * 12/100 * 3.

5400 = principal * 36/100.

5400 * 100 = principal * 36,

540000= 36 principal.

540000/36 = principal.

15000 = principal.

5400 = principal * 12/100 * 3.

5400 = principal * 36/100.

5400 * 100 = principal * 36,

540000= 36 principal.

540000/36 = principal.

15000 = principal.

(5)

Sanna said:
1 decade ago

Let the principal amount be p

simple interest=p*n*r/100

so, p*3*12/100=Rs.5400

p*36/100=5400

p=5400*100/36

p=Rs.15000

Thus we can get the answer....

simple interest=p*n*r/100

so, p*3*12/100=Rs.5400

p*36/100=5400

p=5400*100/36

p=Rs.15000

Thus we can get the answer....

Debashree said:
1 decade ago

In 1 year interest is 5400/3=1800rs.

12rs interest in 100 rs principal.

Then 1800rs interest for (1800*100)/12=15000rs(answer).

12rs interest in 100 rs principal.

Then 1800rs interest for (1800*100)/12=15000rs(answer).

Ajianth khedkar said:
8 years ago

5400 is a multiply by 100 then,

12 * 3 means rate of interest of 3 years so,

540000/ 36 = 15000.

So,

Principle amount = 15000.

12 * 3 means rate of interest of 3 years so,

540000/ 36 = 15000.

So,

Principle amount = 15000.

(1)

Ganeshgoud said:
1 decade ago

SIMPLE INTEREST = 5400.

T = 3.

R = 12.

P = ?

S.I = P*T*R/100.

THEREFORE P = S.I*100/T*R.

= 5400*100/12*3.

= 15000.

T = 3.

R = 12.

P = ?

S.I = P*T*R/100.

THEREFORE P = S.I*100/T*R.

= 5400*100/12*3.

= 15000.

SHIVA KUMAR BALLA said:
9 years ago

Actually 12% written as 12/100 right. Then how it's came 100/12 can anybody explain?

Thanks.

Thanks.

Nimisha said:
1 decade ago

@Naveen

'p' is principle,

't' is time,

'n' is number of years and

'r' is rate of interest.

'p' is principle,

't' is time,

'n' is number of years and

'r' is rate of interest.

Srinivas said:
1 decade ago

S.I=P*T*R/100

SIMPLE INTEREST=5400

T=3

R=12

THEREFORE P=S.I*100/T*R

=5400*100/12*3

=15000

SIMPLE INTEREST=5400

T=3

R=12

THEREFORE P=S.I*100/T*R

=5400*100/12*3

=15000

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