NCERT Solutions Class 7 Mathematics Solutions for Exercise 1.3 in Chapter 1 - Integers

Question 70 Exercise 1.3

Q6) A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the process begins?


Solution 6:

The present room temperature = 40\degree C

The room temperature decreasing every hour by rate of = 5\degree C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)

= 40\degree C-50\degree C\

= -10\degree C

so, the room temperature after 10 hour = -10\degree C

Connect with us on social media!
2022 © Quality Tutorials Pvt Ltd All rights reserved