allery(x + y) : (x - y) = 7 : 3 ആണെങ്കിൽ, x : y എന്നത്
A3 : 7
B2 : 5
C7 : 3
D5 : 2
Answer & Solution
Correct answer: D. 5 : 2
ക്രോസ്-ഗുണനം ചെയ്യുമ്പോൾ 3x + 3y = 7x - 7y ലഭിക്കും, അതിനാൽ 4x = 10y ഉം x : y = 5 : 2 ഉം ലഭിക്കും.
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