Aptitude - Simple Interest - Discussion
Discussion Forum : Simple Interest - General Questions (Q.No. 4)
4.
How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
Answer: Option
Explanation:
years Discussion:
65 comments Page 7 of 7.
Ganesh said:
9 years ago
They gave a number of Rs 450 so as per the formula amt = principal + interest, the amount should be subtracted from interest to get the principal but they directly takes principal as 450. Is it correct? Can anyone please clarify.
Dhamo said:
8 years ago
Formula: SI = P * T * R/100,
SI = simple interest(81),
P = principal(450),
T = time(?),
R = rate(4.5),
T = SI * 100/P * R.
T = 81 * 100/450 * 4.5,
T = 8100/2025.
T = 4. Here s the answer.
SI = simple interest(81),
P = principal(450),
T = time(?),
R = rate(4.5),
T = SI * 100/P * R.
T = 81 * 100/450 * 4.5,
T = 8100/2025.
T = 4. Here s the answer.
Vinod said:
8 years ago
Here 450is given as amount but it is taken as principle. Please Clear my confusion regarding this.
Mahesh senthil said:
8 years ago
450 ---> 81-----> 4.5.
2*4.5 --->. 81-----> 2*4.5,
9 *9 &----- > 81,
2*2 = 4.
2*4.5 --->. 81-----> 2*4.5,
9 *9 &----- > 81,
2*2 = 4.
Vibin said:
2 decades ago
I want to know the formula for converting from percentge to years and amount to years.
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