Directions (Next Five Questions) : In the given questions , two equations numbered I and II are given. You have to solve both the equations and
I. 9x2-45x+56=0
II. 4y2-17y+18=0
9x2-24x-21x+56=0
3x(3x-8)-7(3x-8)=0
x=7/3, 8/3
4y2-9y-8y+18=0
y(4y-9)-2(4y-9)=0
(y-2)(4y-9)=0
y=2,9/4
So, x>y
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?
INR 1,500/-were invested for 5 years in scheme A which offers simple interest at a rate of 14%p.a.. The amount received after 5 years and some additional money, is then invested in scheme B. For 2 years, which offers compound interest(compounded annually) at a rate of 20% p.a.. If the compound interest received from scheme B after 2years is INR 1,408/-, what was the additional money invested in scheme B apart from the amount received from scheme A ?