If 3(x - y) = 27 and 3(x + y) = 243, then x is equal to:
A. 0
B. 2
C. 4
D. 6
Answer: Option C
Solution(By Examveda Team)
3x - y = 27 = 33 ⇔ x - y = 3 ....(i)3x + y = 243 = 35 ⇔ x + y = 5 ....(ii)
On solving (i) and (ii), we get x = 4.
This Question Belongs to Arithmetic Ability >> Surds And Indices
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