- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

# The temperature at $12$ noon was $10^{\circ}\ C$ above zero. If it decreases at the rate of $2^{\circ}\ C$ per hour until midnight, at what time would the temperature be $8^{\circ}\ C$ below zero? What would be the temperature at mid-night?

**Given: **

The temperature at $12$ noon was $10^{\circ}\ C$ above zero. It decreases at the rate of $2^{\circ}\ C$ per hour until midnight.

**To do: **

We have to find the time at which temperature will be $8^{\circ}\ C$ and the temperature at midnight.

**Solution:**

Initial temperature $=10^{\circ}\ C$

Rate of decrease in temperature per hour $=2^{\circ}\ C$

The above situation can be written in an equation form as,

Temperature $(T) = (10-2x)^{\circ}\ C$ where $x$ is the time between noon and midnight.

The time at which the temperature would be $8^{\circ}\ C$ below zero is,

$-8 = (10-2x)$

$-8 = 10-2x$

$2x=10+8$

$2x=18$

$x=\frac{18}{2}$

$x=9$

Therefore, at $9\ PM$ the temperature would be $8^{\circ}\ C$ below zero.

The temperature at mid-night($12\ AM$) $=$ The decrease in temperature between 12 noon($12\ PM$) and midnight($12\ AM$)

The decrease in temperature in $12$ hours $= 12 \times 2^{\circ}\ C$

$= 24^{\circ}\ C$

The temperature at midnight $=10^{\circ}\ C-24^{\circ}\ C$

$=-14^{\circ}\ C$

Therefore, the temperature at midnight would be $14^{\circ}\ C$ below zero.

- Related Questions & Answers
- Why it is important to sleep at noon?
- Find the arrangement of queue at given time in C++
- Get object at the top of the Stack in C#
- What are the best places to satisfy tasty food cravings at midnight in Hyderabad?
- Removing the node at the start of the LinkedList in C#
- It ethics at workstation
- Remove the element at the specified index of the ArrayList in C#
- Insert an object at the top of the Stack in C#
- Present value of money is 2500, which is invested at 10% and time of investment is 2 years. Calculate the future value.
- What are the differences between You At 18 and You At 28?
- Match any string with p at the end of it.
- Match any string with p at the beginning of it.
- C# program to convert time from 12 hour to 24 hour format
- C++ program to convert time from 12 hour to 24 hour format
- How to remove at the rate sign @ at last position from every value in R data frame column?
- Probability of reaching a point with 2 or 3 steps at a time in C++