Chapter 6, Problem 35AT

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8th Edition

Robert Brechner + 1 other

ISBN: 9781305585447

Textbook Problem

Solve the following word problems for the unknown. Round decimals to hundredths and percents to the nearest tenth when necessary.

Last year Keystone’s corporate jet required $23,040 in maintenance and repairs.

**a.** If this represents 32% of the total operating costs of the airplane, what was the total cost to fly the plane for the year?

**b.** If the plane flew 300,000 miles last year, what is the cost per mile to operate the plane?

**c.** Sky King Leasing offered a deal whereby it would operate the plane for Keystone for only $0.18 per mile. What is the percent decrease in operating expense per mile being offered by Sky King?

**d.** In one ten-year period, the sales of used business jets rose and fell and then rose again. Use the chart “Jets for Sale” to calculate the rate of increase of jets available in 2009 compared with 1999. Round to the nearest whole percent.

**(a)**

To determine

**To calculate:** The total cost to fly the plane for the year if maintenance and repair represents

Explanation

**Given Information:**

It is given that Keystone’s corporate jet required

**Formula used:**

**Calculation:**

Consider the value of rate is

Here the total cost to fly the plane for the year is unknown therefore the missing value is base as base is the whole amount.

The formula to compute the base is

Transform percent or rate to a decimal value as,

**(b)**

To determine

**To calculate:** The cost per mile to operate the plane, if the plane flew

**(c)**

To determine

**To calculate:** The percent decrease offered by Sky King in operating expense per mile such that it offered a deal according to which it operate the plane for Keystone for only

**(d)**

To determine

**To calculate:** The rate of increase of jets available in

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