allery40 kg ના એક મિશ્રણમાં A, B, C, D 5 : 9 : 4 : 2 ના ગુણોત્તરમાં છે. B નું પ્રમાણ કેટલું છે?
A16 kg
B18 kg
C20 kg
D9 kg
Answer & Solution
Correct answer: B. 18 kg
20 ભાગનું વજન 40 kg છે, તેથી એક ભાગ 2 kg થાય અને B નું પ્રમાણ 9 x 2 = 18 kg થાય.
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