1)

Which is better investment ?  7(1/2) % stock at 105 or 6( 1/2) %  stock at 94.


A) 7(1/2) at 104

B) 6 (1/2) at 94

Answer:

Option A

Explanation:

Let the investment in each case be Rs. (105 x 94).

Case I : 7 (1/2) % stock at 105

On investing Rs. 105, income = Rs 15/2

On investing Rs. (105 x 94), income = Rs. ( (15/2) x (1/105) x 105 x 94= 705

Case II : 6 (1/2) % stock at 94

On investing Rs. 94, income = Rs. 13/2

On investing Rs. (105 x 94), income = Rs. ( (13/2) x (1/94) x 105 x 94)=Rs. 682.50.

Clearly, the income from 7 (1/2) % stock at 105 is more.

Hence, the investment in 7 (1/2) % stock at 105 is better