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Stocks and Shares - General Aptitude

Q1:

Rs. 9800 are invested partly in 9% stock at 75 and 10% stock at 80 to have equal amount of incomes. The investment in 9% stock is:

A Rs. 4800

B Rs. 5000

C Rs. 5400

D Rs. 5600

ANS:B - Rs. 5000

Let the investment in 9% stock be Rs. x. Then, investment in 10% stock = Rs. (9800 - x).

9 x x = 10 x (9800 - x)
75 80
3x = 9800 - x
25 8
 24x = 9800 x 25 - 25x  49x = 9800 x 25  x = 5000.