AB=AC, what is the value of
?
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A train 200 metres long passes through a tunnel of 1.3 km. If speed of the train is 20 m/s then how long the train will take to come out of the tunnel completely?
A car needs to cover 800 km of distance. It covers first 500 km in 4 hours at constant speed. What should be the speed of this car to cover next 300 km so that the average speed of this car is 80 km/h.