Let
x = minutes used for jogging
y = minutes used for handball
z = minutes used for cycling
Th total time spent is 1 hour (60 minutes), therefore
x + y + z = 60
Because Mike jogs as long as he cycles, therefore
x = z
Therefore
2x + y = 60
or
y = 60 - 2x (1)
Jogging consumes 10 calories/min, handball consumes 9 calories/min and cycling consumes 12 calories/min.
The calories consumed in 60 minutes is 580, therefore
10 x + 9y + 12z = 580
Because x = z,
22x + 9y = 580 (2)
Substitute (1) into (2).
22x + 9(60 - 2x) = 580
22x + 540 - 18x = 580
4x = 40
x = 10
y = 60 - 2x = 40
z = x = 10
Answer:
10 minutes of jogging
40 minutes of handball
10 minutes of cycling.
Answer:
III. Points on the PPF curve are the only ones that achieve "productive efficiency"
Explanation:
What is true about productive efficiency is that Points on the PPF curve are the only ones that achieve "productive efficiency".
Productive efficiency is an economic term that is concerned with producing goods and services with the optimal combination of inputs to produce maximum output for the minimum cost.
For it to be said that an economy is productively efficient means the economy must be producing on its production possibility frontier
Hence productive efficiency happens when production is reportedly occurring along a production possibility frontier (PPF).
Answer:
I'm not sure what this question is about, but the concept of the income expenditures model and its components is the following:
In the income (or aggregate) expenditures model, its author (Keynes) established certain assumptions in order to analyze how the economy works as a whole. His assumptions included that investment, government spending and net exports were all independent from income level.
When the economy is at equilibrium, total expenditures (GDP) = income level = consumption + government + investment + net exports
Another important assumptions are:
- marginal propensity to consume (MPC) + marginal propensity to save (MPS) = 1
- consumption = autonomous consumption + [MPC x (total income level - taxes)]
Savings = investment increase when disposable income increases or real GDP increases.
This model is used to explain the relationship between labor and production levels, and how they are affected by the economy's total expenditures. By increasing expenditures, the demand for labor and products/services will increase.
Answer:
Less, fall, toward
Explanation:
Refer to Exhibit 3-17. At a price of $20, the quantity demanded of good X is less than the quantity supplied of good X, and economists would use this information to predict that the price of good X would soon fall. This would push the price toward the equilibrium price.
