alleryযদি (x + y) : (x - y) = 7 : 3 হয়, তেন্তে x : y হ'ল
A3 : 7
B2 : 5
C7 : 3
D5 : 2
Answer & Solution
Correct answer: D. 5 : 2
বজ্ৰ-গুণন কৰিলে পোৱা যায় 3x + 3y = 7x - 7y, গতিকে 4x = 10y আৰু x : y = 5 : 2।
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