450 km ki doori tay karne me train A Train B ki tulna me 45 minute adhik time leti hai injan ki kharabi ke karad train B ki gati 1/4 kam ho jaati hai usi yatra ko poora krne me A kitulna me 30 minute adhik samay leti hai A ki gati kitni hai km/hr
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यदि यह चाल 5 Km/h अधिक होती, तो वह उसी यात्र में 1 घंटा कम समय लेती। रेलगाड़ी की ...
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