Lesson: Applied Arithmetic - 10

Introducing Rates

[Page 10 of 36]
A rate is a ratio that compares two different kinds of numbers, such as miles per hour or dollars per pound. A unit rate compares a quantity to its unit of measure. A unit price is a rate comparing the price of an item to its unit of measure.
The rate "miles per hour" gives distance traveled per unit of time. Problems using this type of rate can be solved using a proportion, or a formula.

Video Lesson - rates and Ratios

A rate is simply a ratio that compares distance over time, or amount over time, or cost over units.

In other words: or or

The key to solving most Rate problems is to set them up as proportions, convert units if necessary, and solve for the unknown value:

Solving Rates: The Textbook Approach

A waitress serves 3 diners every 5 minutes. At this rate, how many customers will she serve in one hour?

Set up a proportion.
 
Convert units.
 
Cross-multiply and solve.
BackNext

Next to display next topic in the chapter.

Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

Quantitative Aptitude Reasoning English General Knowledge Picture Patterns
More for You
MCQ with question Explanations Scholarships and Financial Aid

Arithmetic

Lessons on Basic to Advance Arithmetic with practice questions

Quantitative Comparison

Learn techniques how to crack quantitative comparison section

PPSC Post of Tehsildar Exam

Learn about the exam of PPSC Post of Tehsildar

All in this Category

You may be interested in

Colleges in Lahore

Find a comprehensive list of major ...

Colleges in Hydrabad

Find a comprehensive list of major ...

LUMS: NOP Financial Aid Program

Find all about LUMS NOP Financial A ...

PPSC - Account Officer

Prepare the test for PPSC post of A ...

GMAT CAT

What is GMAT CAT? How to deal with ...

ECAT Engineering Colleges Admissions Tests

Prepare ECAT with practice question ...

NUST Engineering

National University of Science and ...

NTU: National Textile University Engineering

National Textile University BSc Eng ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA