Join Our Socials

Rs. 4000

Rs. 4500

Rs. 5500

Rs. 6000

A. Rs. 4000

Let investment in 12% stock be Rs. x.

Then, investment in 15% stock = Rs. (12000 - x).

$\therefore \frac{12}{120}\times x+\frac{15}{125}\times (12000-x)=1360.$

$\Rightarrow \frac{x}{10}+\frac{3}{25}(12000-x)=1360.$

$\Rightarrow 5x+72000-6x=1360x50$

$\Rightarrow x=4000.$