SBI PO Prelims 2017: Quantitative Aptitude Quiz - Set 11 | Quadratic Equations


Hello and welcome to exampundit. Here is a set of Quadratic Equations for SBI PO Prelims 2017.

In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer
1) if x > y
2) if x < y
3) if x ≥ y
4) if x ≤ y
5) if x = y or relation cannot be established between 'x' and 'y'.


1. I.  8x+y=10
   II. 4x+2y=13




2. I. 2x2-11x+12=0
   II. 2y2-17y+36=0



3. I. (3x-2)/y = (3x+6)/(y+16)
   II.(x+2)/(y+4) = (x+5)/(Y+10)



4. I.  5x2=19x-12
   II. 5y2+11y=12



5. I. (x2-10x+16)/(x2 -12x +24) = 2/3
   II. y2-y-20=0



6. I.  6x2-49x+99=0
   II. 5y2+17y+14=0





Solutions - Tap to show
1. Ans-2
x=7/12, y=16/3
x<y


2. Ans-4
x=3/2 (1.5) ,  4
y=4, 9/2 (4.5)
x=<y


3. Ans-2
(3x-2)/y = (3x+6)/(y+16)
48x-8y = 32 ---- (i)
(x+2)/(y+4) = (x+5)/(y+10)
y = 2x ---- (i)
From Equation (i) & (ii)
x=1, y=2
y>x


4. Ans-3
x=3,4/5(0.8)
y = 4/5 (0.8),-3
 x>=y


5. Ans-5
x=0,6
y=-4,5
no relation


6. Ans-1
x=11/3(3.66), 9/2(4.5)
y= -2,-7/5(-1.4)
x>y







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