Aptitude - Simple Interest - Discussion

Discussion Forum : Simple Interest - General Questions (Q.No. 1)
1.
A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
Rs. 650
Rs. 690
Rs. 698
Rs. 700
Answer: Option
Explanation:

S.I. for 1 year = Rs. (854 - 815) = Rs. 39.

S.I. for 3 years = Rs.(39 x 3) = Rs. 117.

Principal = Rs. (815 - 117) = Rs. 698.

Discussion:
171 comments Page 6 of 18.

Vishnu said:   1 decade ago
To get a si of one year or it might be two years if it is two year we have to divide it by two si=3yrs -2yrs willl give u one year si why should we have to go to risk.

RAMESH said:   1 decade ago
PTR/100 = 815
P*3*R/100 = 815
R/100=854- 815
p * 3 * 39 = 815
P * 117 = 815
p = 815-117 = 698

Hari said:   1 decade ago
I like this type of solutions thank you

I think this answer also

1year 854-815=39

3years 39*4=156

854-156=698

Rajini kumar said:   1 decade ago
S.Ib = PNR/100

Narasimha reddy said:   1 decade ago
S.I=PTR/100

Reshmi said:   1 decade ago
Thank you gayathri. You explained well.

Prathap said:   1 decade ago
Simple and clear explanation by gayatri.

Raghu karthic said:   1 decade ago
Superb explanation gayathri. Thanks a lot.

Ashik said:   1 decade ago
S.I for one yr=854-815=39
for 4 years=4*39=156
hence,854-156=698

i think it will be simple....

Uma said:   1 decade ago
@gayathri your explination is very helpfull.

Thank you.


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