Company x has been contracting its overhauling work to company y for $40,000 per machine per year. company x estimates that by building a $500,000 maintenance facility with a life of 15 years and a salvage value of $100,000 at the end of its life, it could handle its own overhauling at a cost of only $30,000 per machine per year. what is the minimum annual number of machines that company x must operate to make it economically feasible to build its own facility? (assume an interest rate of 10%.)

M = 2.08 machine

Explanation:

(A/P, 10%,15) is calculated from compound interest tables

               =  400,000 (0.1315) + (10000)

               = $62600

Let M be number of machines

AE(10%) = ($40,000 - 10,000) M - $62600 = 0

SOLVING FOR M

30000 M = 62600

M = 2.08 machine

if kj of heat is transferred o 1200 g liquid water at 36'c, what would the new temperature of the water be? (he specific heat capacity of liquid water is 4.186 j/g''c)

a. 15'c

b.100'c

c.51'c

d.36'c

d. to get countries or companies to stop doing something objectionable.