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 4 of 7.
Naowaz said:
8 years ago
Here, I = (P x r x t/100).
Faisal irshad said:
8 years ago
S=p+I and t=(s/p-1)/r.
Jayraj said:
8 years ago
Awsome @Sameera.
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.
Aiswarya mohan v said:
8 years ago
Given
Si=81
P=450
R=4.5
T=?
We know si=PRT/100.
Therefore T=si*100/P*R,
=81*100/450*4.5,
=81*10/45*4.5,
=81*2/9*4.5,
=9*2/4.5,
=18/4.5,
=4.
Si=81
P=450
R=4.5
T=?
We know si=PRT/100.
Therefore T=si*100/P*R,
=81*100/450*4.5,
=81*10/45*4.5,
=81*2/9*4.5,
=9*2/4.5,
=18/4.5,
=4.
(1)
Ravula Sandeep Kumar said:
8 years ago
I should explain clearly in this.
Then time =100 * 81/450 * 4.5,
= 2 * 9/4.5,
= 18/4.5,
= 18 * 10/45,
= 18 * 2/9,
= 2 * 2,
= 4 years.
Then time =100 * 81/450 * 4.5,
= 2 * 9/4.5,
= 18/4.5,
= 18 * 10/45,
= 18 * 2/9,
= 2 * 2,
= 4 years.
(3)
Vinod said:
8 years ago
Here 450is given as amount but it is taken as principle. Please Clear my confusion regarding this.
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.
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.
Mohammed ashik said:
9 years ago
100% = 450. Rs.
1% = 4.5 Rs.
4% = 18.00 Rs.
0.5% = 2.25 Rs.
So 4.5% = 20.25 Rs.
Hence 20.25 * 4 = 81 Rs.
Ans: 4 years.
1% = 4.5 Rs.
4% = 18.00 Rs.
0.5% = 2.25 Rs.
So 4.5% = 20.25 Rs.
Hence 20.25 * 4 = 81 Rs.
Ans: 4 years.
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