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Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447

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Chapter
Section
BuyFindarrow_forward

Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447
Textbook Problem

Set up and solve equations for each of the following business situations.

At TelePower Plus, long-distance phone calls to China cost $0.59 for the first minute and $0.25 for each additional minute plus an additional roaming charge of $2.50. If the total charge of a call to Beijing was $11.84, how long did the call last?

To determine

To calculate: The time of call last, if a long distance call is done by Tele Power plus from china to Beijing and it charges $0.59 for first minute of the call and $0.25 for further calls and $2.50 as roaming charges and the total charge paid for the call is $11.84.

Explanation

Given Information:

A long distance call is done by Tele Power plus from china to Beijing and it charges $0.59 for first minute of the call and $0.25 for further calls and $2.50 as roaming charges and the total charge paid for the call is $11.84.

Formula used:

To solve the equation and prove the solution, follow the steps as mentioned below.

Step 1: Understand the problem and write the facts of the equation.

Step2: List the known and the unknows from the problem.

Step3: Write the equation with the help of following table of key word,

Equal Sign

Addition

Subtraction

Multiplication

Division

Parentheses

Is

And

Less

Of

Divide

Times the quantity of

Are

Added to

Less than

Multiply

Divided by

Was

Totals

Smaller than

Times

Divided into

Equals

The sum of

Minus

Product of

Quotient of

Gives

Plus

Difference

Multiplied by

Ratio of

Giving

More than

Decreased by

Twice

Leaves

Larger than

Reduced by

Double

Results in

Increased by

Take away

Triple

Produces

Greater than

Loss of

At

yields

exceeds

Fewer than

@

Step4: Solve the equation by rearrange the unknown values to the left side and known values to the right side of the equal sign.

Step5: Prove the solution by substituting the value obtained from step 4 in the equation formed in step 4 then check the left and right of the equation if, they are equal then the answer is correct.

Calculation:

Underline the keyword by using the table of key word.

Charge for first minute call plus charge for all next minutes multiply by the time of next minutes of call made plus roaming charges equals total charge.

Suppose that X be the time of addition call minutes.

Therefore, the time of the call last is X+1 minutes.

Consider the charges for first minute is $0.59 and for further calls is $0.25 and extra roaming charge is $2

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