Question

A train reaches a bridge PQ. Inside the tunnel is a dog located at a point that is 3/8 of the distance PQ measured from the entrance P. When the train beep the dog runs. If the dog moves to the entrance of the bridge P, the train catches the dog exactly at the entrance. If the dog moves to the exit Q, the train catches the dog at exactly the exit. If the speed of train is 40kmph then find the speed of the dog?

Answer 1

Answer:

Length of the two parallel sides of a trapezium are 8.5 cm and 11.5 cm and its height is 4.2 cm. ∴ The area of the trapezium is 42 sq. cm.