I. 2x²+11x+14=0

II. 2y²+15y+28=0

I. 9x²-45x+56=0

II. 4y²-17y+18=0

I.  4x²+16x+15=0

II.  2y²+3y+1=0

I. 2x²-7x+3=0

II. 2y²-7y+6=0

8 years ago, Jyoti’s age was equal to the Swati’s present age. If the sum of Jyothi’s age 10 years from now and swati’s age 6 years ago is 88 years. What is the Kusum’s age 14 years ago if kusum is 8 years younger to Swati ? (in years)

In what respective ratio two varieties of rice costing INR 36 per kg and INR 60 per kg be mixed; so that by selling the mixture of INR 54 per kg 20%profit is earned?