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शैलेन्द्र 20 किमी/घंटे साइकिल चलाकर 3 घंटे में अपने कार्यालय पहुँच सकता है । यदि वह 1 घंटे देरी से शुरू करता है , तो उसे गंतव्य स्थान पर समय पर पहुँचने के लिए किस चाल से साइकिल चलनी होगी ।
A. 20 km/h/ 20 किमी/घंटे
B. 25 km/h/ 25 किमी/घंटे
C. 30 km/h/ 30 किमी/घंटे
D. 35 km/h/ 35 किमी/घंटे

1 Answer

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Best answer
Correct Answer - C
Distance `= 20 xx 3 = 60km`
(जब 1 घंटे की देरी होती है तब घटा समय)
(तब बढ़ी हुई चाल)
`= (60)/(2) = 30 km//hr`

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