Question

Rita goes 20 km towards east from a point A to the point B. From B, she moves 30 km towards west along the same road. If the distance towards east is represented by a positive integer then, how will you represent the distance travelled towards west? By which integer will you represent her final position from A?
NCERT Class 7th Mathematics Chapter 1 Integers

Answer 1

10^1 or 10^1/2*2 will represent her final position