For the following questions answer them individually
The value of k, for which the quadratic equation $$Â 4x^{2} + 4 \sqrt{3x} + k = 0 $$ has equal roots is:
15 years ago Cynthia was thrice as old as Brittany. The sum of their present ages is 94 years. How old is Brittany now?
By selling a used phone for ₹ 6,160 Rajan got 44% less than what it cost him to buy it a few years ago. At what price should Rajan have been able to sell it to make a profit of 5%?
