Algebra House
  • Ask a Question
    • Answered Questions
  • Examples
  • State Test Practice
    • Algebra 1 State Test Practice
    • Geometry State Test Practice
  • ACT and SAT
  • Calculators
    • Problem Solver
    • Graphing Calculator
    • 3D Graphing Calculator
  • Contact
    • Contact Algebra House
    • Leave a Tip


​​ALGEBRA eXAMPLES

Walkie-talkie on a 15 mile radius

3/6/2017

 
Dennis and Chris Reed leave simultaneously from the same point hiking in opposite​ directions, Dennis is walking at 4 miles per hour and Chris at 2 mph. How long can they talk on their​ walkie-talkies if the​ walkie-talkies have a 15 mile​ radius?


​Distance = rate x time
d = rt 


Dennis 
rate = 4
time = t    {left at same time}
d = 4t    {distance = rate x time} 

Chris
rate = 2
time = t    {left at same time}
d = 2t    {distance = rate x time} 

Combined distances must be no more than 15 miles. 

4t + 2t = 15    {added distances and set equal to 15}
6t = 15    {combined like terms}
t = 2.5 hours    {divided each side by 6} 

0.5 hours is 30 minutes. 

They can talk for 2 hours and 30 minutes,
or 2.5 hours as requested for rounding.

​Ask Algebra House


Comments are closed.

    Ask a Question





    Examples

    All
    All Word Problems
    Basic Math
    Combining Like Terms
    Distributive Property
    Equations Of Lines
    Exponents
    Factoring
    Foil Method
    Functions
    Geometry
    Graphing
    Imaginary Numbers
    Inequalities
    Linear Equations
    Literal Equations
    Miscellaneous
    Percents
    Pythagorean Theorem
    Quadratic Equations
    Radicals
    Simplifying
    Slopes And Intercepts
    Solving Equations
    System Of Equations
    Word Problems Age
    Word Problems Distance
    Word Problems Geometry
    Word Problems Integers
    Word Problems Misc.
    Word Problems Mixture
    Word Problems Money
    Word Problems Number



Algebra House
  • Ask a Question
    • Answered Questions
  • Examples
  • State Test Practice
    • Algebra 1 State Test Practice
    • Geometry State Test Practice
  • ACT and SAT
  • Calculators
    • Problem Solver
    • Graphing Calculator
    • 3D Graphing Calculator
  • Contact
    • Contact Algebra House
    • Leave a Tip