Solution:
Given Information,
Heat input = ( 
) = 5.5 × 
Btu/h
Efficiency of combustion for the boiler (
) = 0.7
Efficiency after adjustments (
) = 0.8
Operating Hours (t) = 5200h
Unit cost (c) = 
Calculate heat output from the boiler 
= x
= 5.5 x x 0.7
= 3.85 x Btu/h
Now determine the heat input after the upgrade
= / 
= 3.85 x / 0.8
= 4.8125 x Btu/h
Calculate the energy conserved post-tuning
= -
= 5.5 x - 4.8125 x Btu/h
= 0.6875 x Btu/h
Calculate the yearly energy savings ( 
)
= x t
= ( 0.6875 x Btu/h ) ( 5200 hr/yr)
= 3575 x Btu/h
Lastly, calculate the annual cost savings
Annual savings = 
x Unit cost
= 3575 x Btu/h x
= 82225
Solution:
Larger companies can gain control over natural resources.
Justification:
Governments investing with surplus cash flows raise concerns for trade specialists because such investments could enable large corporations to take charge of a nation's natural resources, as well as sensitive technologies and the management controls related to these assets.
In general,
sovereign wealth funds (SWFs) are government-sponsored investments aimed at enhancing the economy and benefitting a nation and its citizens, although a rapid increase in these foreign direct investments from SWFs may negatively impact the country's citizens and the resources available to the nation.
Answer: The average annual arithmetic return is 3.75%.
Explanation:
Year 1 = 10%
Year 2 = 15%
Year 3 = 15%
Year 4 = -25%
Total return = 15%
The arithmetic average annual return is calculated as (Year 1 return + Year 2 return + Year 3 return + Year 4 return) / 4 = 15% / 4 = 3.75%.
Answer and Explanation:
Here is the breakdown:
1. For the contribution to Mother Nature
This corresponds to sales amounting to $2,750
2. Regarding Tlaloc's value-added
It equates to
= $7,750 - $2,750
= $5,000
3. For Bob’s value added
It corresponds to
= $20,000 - $7,750
= $12,250
This process applies equally to all three.
