Subject
Govt.Jobs
Topic
সিকিউরিটি প্রিন্টিং কর্পোরেশন লি. সহকারি ব্যবস্থাপক (সাধারণ)-২৬.১১,২০২১
If 3x - 5y = 5 and x/(x+y)=5/7 then what is the value of x - y is
If 3x - 5y = 5 and x/(x+y)=5/7 then what is the value of x - y is
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9Explanation
দেওয়া আছে , 3x-5y=5..........(i) এবং x/(x+y)=5/7 বা,7x=5x+5y বা,2x=5y. বা,x=5y/2 ........(ii) অতএব, (i) 3(5y/2)-5y=5 বা,15y-10y=10 বা,5y=10 বা,y=2 অতএব ,(ii) x=5/2×2=5 অতএব ,x-y=5-2=3Related questions
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