Formulate the following problems as a pair of equations, and hence find their solutions.
Roohi travels 300 km to her home partly by train and partly by bus. She takes 4 hours if she travels 60 km by train and the remaining by bus. If she travels 100 km by train and the reamining buy bus, she takes 10 minutes longer. Find the speed of the train and the bus-separately.

Formulate the following problems as a pair of equations, and hence find their solutions : Roohi travels 300 km to her home partly by train and partly by bus. She takes 4 hours if she travels 60 km by train and the remaining by bus. If she travels 100 km by train and the remaining by bus, she takes 10 minutes longer. Find the speed of the train and the bus separately.

Priya travels 300 km to her home partly by train and partly by bus. She takes 4 hours if she travels 60 km by train and the remaining by bus If she travels 100 km by train and the remaining by bus, she takes 10 minutes longer. Find the speed of the train and the bus separately.

Formulate the following problems as a pair of equations. Roohi travels 300 km to her home partly by train and partly by bus. She takes 4 hours if she travels 60 km by train and the remaining by bus. If she travels 100 km by train and the remaining by bus, she takes 10 minutes longer. Find the speed of the train and bus separately.

Anirudh can row downstream 20km in 2 hours, and upstream 4 km in 2 hours. Find his speed of rowing in still water and speed of the current. OR Adithya travels 300 km to her house partly by bus. She taken 4 hours if she travels 60km by train and the remaining by bus. If she travels 100 km by train and the remaining by bus, she takes 10 min longer. find the speed of the train and the bus separately.

Formulate the following problems as a pair of equations, and hence find their solutions. Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current.

Formulate the following problems as a pair of equations, and hence find their solutions : Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current.

A man travels a distance of 196 km by train and returns in a car which travels at a speed of 21 km/hours more than the train if the total journey takes 11 hour. Find the average speed of the train and the car respectively.

A motor boat can travel 30 km upstream and 28 km downstream in 7 hours. It can travel 21 km upstream and return in 5 hours. Find the speed of the boat in still water and the speed of the stream.

The driving wheel of a locomative engine is 2.1 m in radius and it makes 75 revolutions per minute. Find the speed of the train in kmph.