allery(x + y) : (x - y) = 7 : 3 எனில், x : y என்பது
A3 : 7
B2 : 5
C7 : 3
D5 : 2
Answer & Solution
Correct answer: D. 5 : 2
குறுக்குப் பெருக்கல் செய்யும்போது 3x + 3y = 7x - 7y கிடைக்கிறது, எனவே 4x = 10y மற்றும் x : y = 5 : 2.
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