alleryಒಬ್ಬ ದರ್ಜಿ 20 ದಿನಗಳಲ್ಲಿ ಒಂದು ಬ್ಯಾಚ್ ಅನ್ನು ಹೊಲಿಯುತ್ತಾಳೆ, ಅವಳ ಸಂಗಾತಿ 30 ದಿನಗಳಲ್ಲಿ ಹೊಲಿಯುತ್ತಾರೆ. ಒಟ್ಟಿಗೆ ಅವರು
A25 ದಿನಗಳು
B12 ದಿನಗಳು
C10 ದಿನಗಳು
D15 ದಿನಗಳು
Answer & Solution
Correct answer: B. 12 ದಿನಗಳು
ಅವುಗಳ ಸಂಯೋಜಿತ ದರವು ದಿನಕ್ಕೆ 1/20 + 1/30 = 5/60 = 1/12 ಆಗಿದ್ದು, 12 ದಿನಗಳನ್ನು ನೀಡುತ್ತದೆ.
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