alleryएक दर्जी 20 दिसांनी एक बॅच शिंवता, तिचो जोडीदार 30 दिसांनी. एकठांय ते भितर सोंपतात
A25 दीस
B12 दीस
C10 दीस
D15 दीस
Answer & Solution
Correct answer: B. 12 दीस
तांचें एकत्रीत दर 1/20 + 1/30 = 5/60 = 1/12 दर दिसा 12 मेळटा दीस.
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