Class 10, Example- 19, Page 65, Maths (Pair of Linear Equations in Two Variables), NCERT, CBSE Board

Pair of Linear Equations in Two Variables Chapter - 3, Class 10 Example 19 : A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km down-stream. Determine the speed of the stream and that