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11
A man invested Rs. 1552 in a stock at 97 to obtain an income of Rs. 128. The dividend from the stock is:
Discuss
Answer & Solution
Answer: Option B
Solution:
$$\eqalign{ & {\text{By}}\,{\text{investing}}\,{\text{Rs}}{\text{.}}\,{\text{1552,}} \cr & {\text{income}} = Rs.\,128. \cr & {\text{By}}\,{\text{investing}}\,Rs.\,97, \cr & {\text{income}} = Rs.\,\left( {\frac{{128}}{{1552}} \times 97} \right) \cr & = Rs.\,8 \cr & \therefore {\text{Dividend}} = 8\% \cr} $$
12
A 12% stock yielding 10% is quoted at:
Discuss
Answer & Solution
Answer: Option D
Solution:
$$\eqalign{ & {\text{To}}\,{\text{earn}}\,{\text{Rs}}{\text{.}}\,{\text{10,}}\,{\text{money}}\,{\text{invested}} \cr & = Rs.\,100. \cr & {\text{To}}\,{\text{earn}}\,{\text{Rs}}{\text{.}}\,{\text{12,}}\,{\text{money}}\,{\text{invested}} \cr & = Rs.\,\left( {\frac{{100}}{{10}} \times 12} \right) = Rs.\,120 \cr & \therefore {\text{Market}}\,{\text{value}}\,{\text{of}}\,Rs.\,100\,{\text{stocks}} = Rs.\,120 \cr} $$
13
The market value of a 10.5% stock, in which an income of Rs. 756 is derived by investing Rs. 9000, brokerage being $$\frac{1}{4}$$%, is:
Discuss
Answer & Solution
Answer: Option C
Solution:
$$\eqalign{ & {\text{For}}\,{\text{an}}\,{\text{income}}\,{\text{of}}\,Rs.\,756,\,{\text{investment}} \cr & = Rs.\,9000 \cr & {\text{For}}\,{\text{an}}\,{\text{income}}\,{\text{of}}\,Rs.\,\frac{{21}}{2},\,{\text{investment}} \cr & = Rs.\,\left( {\frac{{9000}}{{756}} \times \frac{{21}}{2}} \right) = Rs.\,125 \cr & \therefore {\text{For}}\,{\text{a}}\,Rs.\,100\,{\text{stock,}}\,{\text{investment}}\, = Rs.\,125 \cr & {\text{Market}}\,{\text{value}}\,{\text{of}}\,Rs.\,100\,{\text{stock}} \cr & = Rs.\,\left( {125 - \frac{1}{4}} \right) = Rs.\,124.75 \cr} $$
14
The cost price of a Rs. 100 stock at 4 discount, when brokerage is $$\frac{1}{4}$$% is:
Discuss
Answer & Solution
Answer: Option C
Solution:
$$\eqalign{ & C.P. = Rs.\,\left( {100 - 4 + \frac{1}{4}} \right) \cr & = Rs.\,96.25 \cr} $$
15
Sakshi invests a part of Rs. 12,000 in 12% stock at Rs. 120 and the remainder in 15% stock at Rs. 125. If his total dividend per annum is Rs. 1360, how much does he invest in 12% stock at Rs. 120?
Discuss
Answer & Solution
Answer: Option A
Solution:
$$\eqalign{ & {\text{Let}}\,{\text{investment}}\,{\text{in}}\,12\% \,{\text{stock}}\,{\text{be}}\,Rs.x \cr & {\text{Then,}}\,{\text{investment}}\,{\text{in}}\,15\% \,{\text{stock}} \cr & = Rs.\,\left( {12000 - x} \right) \cr & \therefore \frac{{12}}{{120}} \times x + \frac{{15}}{{125}} \times \left( {12000 - x} \right) \cr & = 1360 \cr & \Rightarrow \frac{x}{{10}} + \frac{3}{{25}}\left( {12000 - x} \right) = 1360 \cr & \Rightarrow 5x + 72000 - 6x = 1360 \times 50 \cr & \Rightarrow \,x = 4000 \cr} $$
16
Which is better investment, 12% stock at par with an income tax at the rate of 5 paise per rupee or $$14\frac{2}{7}\% $$  stock at 120 free from income tax ?
Discuss
Answer & Solution
Answer: Option B
Solution:
Let investment in each case = Rs. (100 × 120)
Income from 12% stock
= $$ {\frac{{12}}{{100}} \times 100 \times 120} $$    = Rs. 1440
Net income
= Rs. $$\left( {1440 - \frac{5}{{100}} \times 1440} \right)$$     = Rs. 1368
Income from $$14\frac{2}{7}\ $$% stock
= Rs. $$\left( {\frac{{100}}{{7 \times 20}} \times 100 \times 120} \right)$$     = Rs. 1428.57
Clearly, $$14\frac{2}{7}\ $$% stock is better.
17
The income derived from a Rs. 100, 13% stock at Rs. 105, is -
Discuss
Answer & Solution
Answer: Option C
Solution:
Income on Rs. 100 stock = Rs. 13
18
A retired man sells out Rs. 7500 of a 10% stock at Rs. 105.50 and invests the proceeds in 14% stock at Rs. 124.50. What is the change in income if he pays a service charge of 0.5% of the face value on each transaction ?
Discuss
Answer & Solution
Answer: Option C
Solution:
Number of shares sold = $$\frac{7500}{100}$$   = 75
Proceeds from sale of Rs. 7500 stock
= Rs. [(105.50 - 0.5) × 75]
= Rs. 7875
Number of new shares purchased
$$\eqalign{ & = \left( {\frac{{7875}}{{124.50 + 0.50}}} \right) \cr & = \left( {\frac{{7875}}{{125}}} \right) \cr & = 63 \cr} $$
Original income
= 10% of Rs. 7500
= Rs. 750
New income
= 14% of Rs. 6300
= Rs. $$\left( {\frac{{14}}{{100}} \times 6300} \right)$$  
= Rs. 882
∴ Change in income
= Rs. (882 - 750)
= Rs. 132
19
The cash realised on selling a 14% stock at Rs. 106.25, brokerage being $$\frac{1}{4}$$ %, is-
Discuss
Answer & Solution
Answer: Option B
Solution:
Cash realised = Rs. (106.25 - 0.25) = Rs. 106
20
A person has deposited Rs. 13200 in a bank which pays 14% interest. He withdraws the money and invests in Rs. 100 stock at Rs. 110 which pays a dividend of 15%. How much does he gain or lose ?
Discuss
Answer & Solution
Answer: Option A
Solution:
Income from bank = 14% of Rs. 13200 = Rs. 1848
Number of shares purchased
= Rs. $$\left( {\frac{{13200}}{{110}}} \right)$$
= Rs. 120
Income from stock
= (15% of Rs. 100) × 120
= Rs. (15 × 120)
= Rs. 1800
∴ Loss = Rs. (1848 - 1800)
            = Rs. 48