allery40 کلو گرام کے مرکب میں A, B, C, D تناسب 5 : 9 : 4 : 2 ہے۔ B کی مقدار ہے
A16 kg
B18 kg
C20 kg
D9 kg
Answer & Solution
Correct answer: B. 18 kg
20 حصوں کا وزن 40 kg ہے، لہذا ایک حصہ 2 kg ہے اور B 9 x 2 = 18 kg ہے۔
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