NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Problems and SolutionsQuestion 123
Class 7 - Mathematics - Unit 1: Number System - Problems and Solutions
Question. 123
You start at 380 m above sea level. During a ride, your elevation changes by: +540 m, −268 m, +116 m, −152 m, +490 m, −844 m, +94 m. What is your final elevation relative to sea level?
Answer:
356 m
Detailed Answer with Explanation:
Running sum: 380→920→652→768→616→1106→262→356. Final elevation = 356 m.