Question

Find the value of K if the equation 2x²+kxy-6y²+3x+y+1=0 represnts a pair of straight lines and also find their point of intersection

Answer 1

Step-by-step explanation:

  

Sravya’s selling price to Ridhi = Actual price + gain   

  

Ridhi sold it to divya at a gain of 10%

Ridhi’s selling price to divya = Rs. 510 + 10% gain  

  

∴ Divya pay to Ridhi for the watch =  Ridhi’s selling price to divya = Rs.561