alleryजिंक और तांबे की एक मिश्रधातु में इनका अनुपात 5 : 3 है। इसके 40 kg में जिंक की मात्रा कितनी है?
A15 kg
B25 kg
C30 kg
D20 kg
Answer & Solution
Correct answer: B. 25 kg
जिंक मिश्रधातु का 5/8 भाग है, और 40 kg का 5/8 भाग 25 kg होता है।
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