allery40 km/h ನಲ್ಲಿ ಪ್ರವಾಸವು 1 h ತಡವಾಗಿ ಕೊನೆಗೊಳ್ಳುತ್ತದೆ; 60 km/h, 1 h ಮುಂಚೆ. ನಿಗದಿತ ಅವಧಿ?
A6 ಗಂಟೆಗಳು
B5 ಗಂಟೆಗಳು
C3 ಗಂಟೆಗಳು
D4 ಗಂಟೆಗಳು
Answer & Solution
Correct answer: B. 5 ಗಂಟೆಗಳು
ದೂರ d ಗೆ, d/40 − d/60 = 2 d = 240 km ನೀಡುತ್ತದೆ, ಆದ್ದರಿಂದ ನಿಗದಿತ ಅವಧಿ 240 ÷ 40 − 1 = 5 ಗಂಟೆಗಳು.
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