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. :- 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 10minutes 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. :- 2 women and 5 men can together finish an embroidery work in 4 days, while 3 women and 6 men can finish it in 3 days. Find the time taken by 1 woman alone to finish the work, and also that taken by.l man alone.

A boat can go 20 km upstream and 30 km downstream in 3 hours. It can go 20 km downstream and 10 km .upstream in 1 2/3 hrs. Find the speed of the boat in still water and speed of stream.

A car travels 90 km in 2 1/2 hour. Find the distance covered in 2 hours with the same speed.

Distance tavelled by Hamid and Akhtar in an hour are 9 km and 12 km.Find the ratio of speed of Hamid to the speed of Akhtar.