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:
66 comments Page 3 of 7.
Aiswarya mohan v said:
9 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)
Ojoswini Mohanty said:
4 years ago
Anyone, please explain me the formula in detail.
(1)
Anet said:
6 months ago
450 * 4.5/100 = 450/100 = 4.5 * 4.5 = 20.25.
81/20.25 = 4.
81/20.25 = 4.
(1)
Sanjay said:
9 years ago
We can check by options also;
We know that S.I=PTR/100.
A.(450*3.5*4.5) ÷ 100=70.8,
B.(450*4*4.5) ÷ 100=81(ans) means 4years,
C.(450*4.5*4.5) ÷ 100=91.1
D.(450*5*4.5)÷100=1001.2.
We know that S.I=PTR/100.
A.(450*3.5*4.5) ÷ 100=70.8,
B.(450*4*4.5) ÷ 100=81(ans) means 4years,
C.(450*4.5*4.5) ÷ 100=91.1
D.(450*5*4.5)÷100=1001.2.
Anirudha said:
9 years ago
450*4.5% = Rs 18 per year.
To find time 81/18 = 4.5.
To find time 81/18 = 4.5.
Faisal irshad said:
9 years ago
S=p+I and t=(s/p-1)/r.
Rushi said:
9 years ago
@Ragu.
The steps you had done is actually like this,
=(100x81)/(450x4.5)
=(2x81)/(9x4.5)
=(2x9)/(1x4.5)
=4.
You hav taken
=(2x2)/(4.5)
bt actually 81/9 is 9 not 2.
The steps you had done is actually like this,
=(100x81)/(450x4.5)
=(2x81)/(9x4.5)
=(2x9)/(1x4.5)
=4.
You hav taken
=(2x2)/(4.5)
bt actually 81/9 is 9 not 2.
Bishal Upadhyay said:
8 years ago
simple as that;
t = (100*81)/(450*4.5),
= 8100/{450*45/10},
= 8100/2025,
= 4.
t = (100*81)/(450*4.5),
= 8100/{450*45/10},
= 8100/2025,
= 4.
Anand said:
7 years ago
Thanks @Rajesh.
Prabhanshu said:
7 years ago
In this question principal is given or amount is given since as we know amount = principal + simple interest ?
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