Aptitude - Compound Interest - Discussion
Discussion Forum : Compound Interest - General Questions (Q.No. 5)
5.
The compound interest on Rs. 30,000 at 7% per annum is Rs. 4347. The period (in years) is:
Answer: Option
Explanation:
Amount = Rs. (30000 + 4347) = Rs. 34347.
Let the time be n years.
| Then, 30000 |  |
1 + | 7 |  |
n | = 34347 |
| 100 |
 |
|
107 | |
n | = | 34347 | = | 11449 | = | |
107 | |
2 |
| 100 | 30000 | 10000 | 100 |
n = 2 years.
Discussion:
46 comments Page 3 of 5.
Isha sharma said:
1 decade ago
Guys this is simple divide numerator and denominator by 3 you will get your answer.
Swa1 said:
1 decade ago
4347=30,000(1+7/100)^n why not?
and 30,000+4347=34,347 why?
plz any one explian me.
and 30,000+4347=34,347 why?
plz any one explian me.
Chaitu said:
1 decade ago
30000(107/100)=32100
(32100*7)/100=147 is for 1 year
2100+2100+147=4347
2 years
(32100*7)/100=147 is for 1 year
2100+2100+147=4347
2 years
France said:
9 years ago
107 * 107 is 11449 and 100 * 100 = 10000 but how is it equal to 34347/30000 ?
Dearlie Beloved said:
10 years ago
Shortcut through using ln:
t = ln (34 347/30 000)/ln (1.07).
t = 2 years.
t = ln (34 347/30 000)/ln (1.07).
t = 2 years.
Rkh said:
9 years ago
What if the power is( 107/100)^4?.
How can we find quad root of a number?
How can we find quad root of a number?
Manasa said:
1 decade ago
What is the shortcut method for calculating the square root of 11449?
Digvijay said:
1 decade ago
Ya! it's not easy to find out. We have to try with value of t.
Arpita Dey said:
1 decade ago
How (107/100)^t = 34347/30000.
t=2?
I forgot the conversion.
t=2?
I forgot the conversion.
Garima said:
4 years ago
Can anyone please tell me how (1+7/100) become (107+100)?
(5)
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