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1. If 2x - y = 10 and x/y = 3, then x = ?
- A. a - 10
- B. a - 10
- C. a - 10
- D. a - 10
Answer: Option D
Explanation:
x/y= 3
3y=x
y= x/3
এখন, 2x-y= 10
বা, 2x- x/3= 10
বা, 6x-x/3= 10
বা, 5x= 30
x= 6.
3y=x
y= x/3
এখন, 2x-y= 10
বা, 2x- x/3= 10
বা, 6x-x/3= 10
বা, 5x= 30
x= 6.
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