Exercise 6.4 || Class 7 Math || Sindh Textbook Board

In this Lecture I explain the Rules for conversion of unit of speed i.e from km/h to m/s and vice versa and also solve variation related problems involving time distance. #class7maths Exercise 6.4 Sindh textbook board #ex 6.4 class 7 math Sindh textbook board #maths class 7 exercise 6.4 Sindh textbook Board #sindhtextbookboard Exercise 6.4 class 7 math