Aptitude - Banker's Discount - Discussion
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Read more:"Hold a true friend with both hands."
- (Proverb)
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| 4. |
The banker's discount on a sum of money for 1 years is Rs. 558 and the true discount on the same sum for 2 years is Rs. 600. The rate percent is:
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| [A]. |
10% | [B]. |
13% | | [C]. |
12% | [D]. |
15% |
Answer: Option C
Explanation:
B.D. for  years |
= Rs. 558. |
| B.D. for 2 years |
| = Rs. |
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558 x |
2 |
x 2 |
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| 3 |
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= Rs. 744 |
T.D. for 2 years = Rs. 600.
 Sum = |
B.D. x T.D. |
= Rs. |
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744 x 600 |
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= Rs. 3100. |
| B.D. - T.D |
144 |
Thus, Rs. 744 is S.I. on Rs. 3100 for 2 years.
| Rate = |
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100 x 744 |
% |
= 12% |
| 3100 x 2 |
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S.V.S Rama Chaitanya said:
(Fri, Dec 3, 2010 06:44:18 AM)
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| how bankers discount for 2yr's has taken .it is given for true discount only |
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Krishna said:
(Sun, Mar 20, 2011 04:13:25 AM)
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Given banker's discount(b.d) for 3/2 yrs = 558
then banker's discount(b.d) for 2 yrs = x
x=(558*2)/(3/2)
x=744
we know
t.d=(b.d*100)/(100+(r*t))
600=(744*100)/(100+(r*2))
Therefore, r=12% |
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