Stocks And Shares Q16

16.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

Answer:

Option : B 

Let investment in 9% stock be Rs. y.

Then, investment in 10% stock = Rs. (9800 - y).

∴		9	x y		=		10	x (9800 - y)
		75					80

⇒	3y	=		9800 - y
	25			8

⇒ 24y = 9800 x 25 - 25y

⇒ 49y = 9800 x 25

⇒ y = 5000