Subject
Bank Exam
Topic
Standard Bank Ltd. - Trainee Assistant Officer - 2018
If 3(x-y)= 27 and 3(x+y)= 243, then x is equal to:
If 3(x-y)= 27 and 3(x+y)= 243, then x is equal to:
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6Explanation
Solution: 3 (x-y) = 27 => 3 (x-y) = 3 3 => x - y = 3 .............(1) আবার, 3 (x+y) = 243 => 3 (x+y) = 3 5 => x + y = 5 ................(2) এবার (1) ও (2) নং সমীকরণ যোগ করে পাই x - y = 3 x + y = 5 _________________ 2x = 8 => x = 4Related questions
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