Rahul Sofat Solutions for Chapter: Integers, Exercise 9: VALUE AND LIFE SKILLS

An elevator descends into a mine shaft at the rate of $9 \mathrm{m}$ per minute. If the descent starts from $20 \mathrm{m}$ above the ground level, how long will it take to reach $-250 \mathrm{m}$? Have you ever been in an elevator? what will you do if you are stuck in an elevator?

A chair costs $₹120$. Peter bought $30$ chairs. By mistake the shopkeeper charged $₹10$ less per chair. To be fair to all, find whether Peter had to pay or receive the money. What is the extra amount? What will you do if by mistake, shopkeeper returns you extra money?