First solve the cost of running the non- energy star model
C = ( $ 0.15 / kWh) ( 0.5 kW) ( 4 hrs /day) 365 day
C = $ 109.5 in a year
Solving the cost of the energy star model
C = ( $ 0.15 / kWh) ( 0.5 kW) ( 4 hrs /day) (0.4) 365 day
C = $ 43.8
Saving in 5 years
S = ( $ 109.5 - $ 43.8) 5
S = $ 328.50
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Answer:
Regulations make it more difficult to produce
<span>Despite the fact that
China's agriculture output is the biggest on the planet, just around 15% of its
total land zone can be used to cultivate. China's arable land, which makes
about 10% of the total arable land on the planet, supports more than 20% of the
total populace.</span>
