Solution:
Given Information,
Heat input is (
) = 5.5 ×
Btu/h
Combustion efficiency of the boiler (
) = 0.7
Combustion efficiency after turn up (
) = 0.8
Operation Hour (t) = 5200h
Unit cost (c) = 
Calculate heat output from the boiler
=
x 
= 5.5 x
x 0.7
= 3.85 x
Btu/h
Calculate the heat input to the boiler after the tune-up
=
/ 
= 3.85 x
/ 0.8
= 4.8125 x
Btu/h
Calculate the saved energy after the tune-up
=
- 
= 5.5 x
- 4.8125 x
Btu/h
= 0.6875 x
Btu/h
Calculate the annual energy saving (
)
=
x t
= ( 0.6875 x
Btu/h ) ( 5200 hr/yr)
= 3575 x
Btu/h
Calculate the annual cost saving
Annual cost saving =
x Unit cost
= 3575 x
Btu/h x 
= 82225
Answer:
Explanation:
Julie is 25 years old and living in an apartment. She is thinking about quitting her job and returning
to college. Consider the following costs: tuition, the cost of books and supplies and rent.
Rent is
A. not a cost associated with college
B. an explicit cost of attending college
C. an implicit cost of attending college
She could try becoming an author, they write in magazines, newpapers, books, and articles. She could write what she wishes and it's on her own.
Answer:
C) By lowering the price of the flower arrangements to increase demand.
Explanation:
According to the law of demand, the lower the prices, the higher the quantity demanded and the higher the price ,the lower the quantity demanded.
When prices are reduced, demand increases, revenue increases and net profit increases.
I hope my answer helps you.