A printing company bought a machine for $86,000, its estimated life of 10 years with a residual value of $6,000 using the straight line method, what's the book value of the machine at the end of year 2

Which problem would you use the following proportion to solve for? 24/x=40/100 a. what is 40% of 24? b. what percent is 24 of 40? c. twenty-four is 40% of what number? d. forty percent of 24 is what number?