alleryएक शिंपी 20 दिवसांत कपड्यांची एक बॅच शिवते, तिची भागीदार 30 दिवसांत शिवते. दोघी मिळून ते काम किती दिवसांत संपवतील?
A25 दिवस
B12 दिवस
C10 दिवस
D15 दिवस
Answer & Solution
Correct answer: B. 12 दिवस
त्यांचा एकत्रित दर प्रतिदिन 1/20 + 1/30 = 5/60 = 1/12 इतका आहे, म्हणजेच 12 दिवस लागतील.
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