Subject
Quantitative Aptitude
Topic
Equation
If 2/x+3/y=9/xy and 4/x+9/y=21/xy. Then the value of x and y are?
If 2/x+3/y=9/xy and 4/x+9/y=21/xy. Then the value of x and y are?
ক)
1 and 21খ)
3গ)
2 and 3ঘ)
2 and 1Explanation
2/x+3/y=9/xy or,2y+3x=9......(i) 4/x+9/y=21/xy 4y+9x=21.....(ii) i-ii, -3x=-3 or,x=1 এখন , 2y+3x=9 or,2y+3=9 so, y =3Related questions
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