alleryಪೈಪ್ಗಳು 8 ಮತ್ತು 12 ಗಂಟೆಗಳಲ್ಲಿ ಟ್ಯಾಂಕ್ ಅನ್ನು ತುಂಬುತ್ತವೆ. ಎರಡೂ 2 ಗಂಟೆಗಳಿಗೆ ತೆರೆದುಕೊಳ್ಳುತ್ತವೆ, ನಂತರ ಮೊದಲನೆಯದು ಮುಚ್ಚುತ್ತದೆ. ಎರಡನೆಯದಕ್ಕೆ ಹೆಚ್ಚಿನ ಸಮಯ ಬೇಕಾಗುತ್ತದೆ.
A6 ಗಂಟೆಗಳು
B9 ಗಂಟೆಗಳು
C7 ಗಂಟೆಗಳು
D8 ಗಂಟೆಗಳು
Answer & Solution
Correct answer: C. 7 ಗಂಟೆಗಳು
ಎರಡು ಗಂಟೆಗಳ ಭರ್ತಿ 2 x 5/24 = 5/12; 1/12 ನಲ್ಲಿ ಉಳಿದ 7/12 ಪ್ರತಿ ಗಂಟೆಗೆ 7 ಗಂಟೆಗಳನ್ನು ತೆಗೆದುಕೊಳ್ಳುತ್ತದೆ.
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