1.
The present worth of Rs. 1404 due in two equal half-yearly installments at 8% per annum simple interest is:
• A.
Rs. 1325
• C.
Rs. 1350
• B.
Rs. 1300
• D.
Rs. 1500
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Explanation :
Required sum = P.W. of Rs. 702 due 6 months + P.W. of Rs. 702 due 1 year hence
= Rs.

100 x 702
100 + 8 x
 1 2

+

 100 x 702 100 + (8 x 1)

 = Rs. (675 + 650) = Rs. 1325
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2.
Find the present value of Rs. 1051.25 due a year hence at 5
 1 8
% -
• A.
Rs. 1200
• C.
Rs. 1500
• B.
Rs. 1000
• D.
Rs. 1050
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Explanation :
P.W. =
 100 x 1051.25 100 + 41/8 x 1

 105125 x 8 841

 = Rs. 1000
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3.
If the true discount on Rs. 161 due 2
 1 2
years hence be Rs. 21. At what rate per cent is the
interest calculated?
• A.
6%
• C.
8%
• B.
4%
• D.
12%
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Explanation :
 Required rate per cent =
100 x 21
(161 - 21) x 2
 1 2

 = 6%
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4.
Rs. 20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?
• A.
Rs. 10
• C.
Rs. 15.20
• B.
Rs. 10.40
• D.
Rs. 13
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Explanation :
S.I. on Rs. 240 for a given time = Rs. 20
S.I. on Rs. 240 for half of the time = Rs. 10
Rs. 10 is T.D. on Rs. 250
Req. T.D. on Rs. 260 = Rs.
 10 250
x 260
 = Rs. 10.40
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5.
The true discount on Rs. 1760 due after a certain time at 12% per annum is Rs. 160. The time after which it is due is:
• A.
6 months
• C.
9 months
• B.
8 months
• D.
10 months
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