Quantitative Aptitude Ques 1915
Question: Directions: In these questions, two equations numbered I and II are given. You have to solve both the equations and mark the appropriate option, [IBPS (PO/MT) 2015]
I. $ 3x^{2}-7x+2=0 $
II. $ 2y^{2}-9y+10=0 $
Options:
A) If $ x>y $
B) If $ x<y $
C) If $ x\ge y $
D) If $ x\le y $
E) If relationship between x and y cannot be established
Show Answer
Answer:
Correct Answer: D
Solution:
- I. $ 3x^{2}-7x+2=0 $
$ \Rightarrow $ $ 3x^{2}-6x-x+2=0 $
$ \Rightarrow $ $ 3x(x-2)-1(x-2)=0 $
$ \Rightarrow $ $ x=2, $ $ 1/3 $
II. $ 2y^{2}-9y+10=0 $
$ \Rightarrow $ $ 2y^{2}-5y-4y+10=0 $
$ \Rightarrow $ $ y(2y-5)-2(2y-5)=0 $
$ \Rightarrow $ $ y=5/2,2 $
$ \therefore $ $ y\ge x $
BETA
