alleryA 40 kg mixture has A, B, C, D in the ratio 5 : 9 : 4 : 2. The amount of B is
A16 kg
B18 kg
C20 kg
D9 kg
Answer & Solution
Correct answer: B. 18 kg
The 20 parts weigh 40 kg, so a part is 2 kg and B is 9 x 2 = 18 kg.
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