Question Details

In each question two equations number (I) and (II) are given. You should solve both the equations and mark appropriate answer.


I. 6x27x+2=0
II. 10y211y+3=0

Options

A

If x=y or no relation can be established

B

If x>y

C

If x<y

D

If x≥y

Show Answer

Correct Answer :

Option A

If x=y or no relation can be established

If x=y or no relation can be established

Solution :

To find the relationship between x and y, we need to solve both quadratic equations.

Step 1: Solve Equation I for x
The first equation is:
6 x 2 7 x + 2 = 0
We can solve this by factoring. We look for two numbers that multiply to 6×2=12 and add up to 7. These numbers are 3 and 4.
Rewriting the middle term:
6 x 2 3 x 4 x + 2 = 0
Factor by grouping:
3 x ( 2 x 1 ) 2 ( 2 x 1 ) = 0
( 3 x 2 ) ( 2 x 1 ) = 0
This gives two possible values for x:
x = 2 3 0.67 or x = 1 2 = 0.5

Step 2: Solve Equation II for y
The second equation is:
10 y 2 11 y + 3 = 0
We look for two numbers that multiply to 10×3=30 and add up to 11. These numbers are 5 and 6.
Rewriting the middle term:
10 y 2 5 y 6 y + 3 = 0
Factor by grouping:
5 y ( 2 y 1 ) 3 ( 2 y 1 ) = 0
( 5 y 3 ) ( 2 y 1 ) = 0
This gives two possible values for y:
y = 3 5 = 0.6 or y = 1 2 = 0.5

Step 3: Compare the values of x and y
Let us compare each value of x with each value of y:
- If x=0.5 and y=0.5, then x=y.
- If x=0.5 and y=0.6, then x<y.
- If x=0.67 and y=0.6, then x>y.
- If x=0.67 and y=0.5, then x>y.
Since we have cases where x<y and cases where x>y, no definite relation can be established between x and y.

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