Aptitude - True Discount - Discussion
Discussion Forum : True Discount - General Questions (Q.No. 14)
14.
The present worth of Rs. 1404 due in two equal half-yearly installments at 8% per annum simple interest is:
Answer: Option
Explanation:
| Required sum | = P.W. of Rs. 702 due 6 months + P.W. of Rs. 702 due 1 year hence | |||||||||||||
|
||||||||||||||
| = Rs. (675 + 650) | ||||||||||||||
| = Rs. 1325. |
Discussion:
22 comments Page 2 of 3.
Tejaswini said:
1 decade ago
Though simple interest formula is p*t*r/100 why there is complexity in calculation can you please explain it in detail?
Niharika said:
9 years ago
@Tejaswini.
S.I = p * t * r/100.
A = P + S.I.
= P + P * T * R/100.
= P(1 + T * R/100).
= P(100 + T*R/100).
So, P = (100 * A/100 + T * R).
S.I = p * t * r/100.
A = P + S.I.
= P + P * T * R/100.
= P(1 + T * R/100).
= P(100 + T*R/100).
So, P = (100 * A/100 + T * R).
Ramesh said:
9 years ago
Why the interest can't be 4% each time?
Bhavani said:
9 years ago
May, I know how 675 came?
Bhavani said:
9 years ago
Can anyone explain how the calculation is done?
Srishti said:
8 years ago
What is the formula used here? Please tell me.
Srishti said:
8 years ago
Why 1yr is used in second bracket?
Vikas said:
8 years ago
Yeah, it should be 1/2 even in the second bracket I guess because it is the equal half yearly basis.
Sravani said:
7 years ago
hi,
In the above problem first half-yearly 702 and second half yearly 702+first half yearly i.e., 1year so in the second bracket, it is taken as one year.
A=p+S.I.
A=P+(PTR/100),
A=P(1+TR/100),
SO Coming To The Problem,
for first half-yearly,
(100*702/100+8*1/2),
For second Half Yearly,
(100*702/100+8*1).
In the above problem first half-yearly 702 and second half yearly 702+first half yearly i.e., 1year so in the second bracket, it is taken as one year.
A=p+S.I.
A=P+(PTR/100),
A=P(1+TR/100),
SO Coming To The Problem,
for first half-yearly,
(100*702/100+8*1/2),
For second Half Yearly,
(100*702/100+8*1).
Rajesh said:
7 years ago
Since it is in SI, only that interest part will be added in each 6 months. So, what is the need for 1year in the second part?
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