Why is it important to be present and active in your courses?
2 answers:
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Total cost for the trip = $800.
Let x = original number of friends.
Therefore the equally shared cost of the trip for each friend is $800/x.
After 2 friends drop out, the cost for each friend increases to $800/(x-2).
The increase in cost for each remaining friend is $20, therefore
Divide through by 20.
Cross multiply.
x(x - 2) = 80
x² - 2x - 80 = 0
(x + 8)(x - 10) = 0
x = -8 or 10
Reject x = -8 because we cannot have a negative number for friends.
x = 10
Answer: There were 10 friends in the original group.
Let x = original number of friends.
Therefore the equally shared cost of the trip for each friend is $800/x.
After 2 friends drop out, the cost for each friend increases to $800/(x-2).
The increase in cost for each remaining friend is $20, therefore
Divide through by 20.
Cross multiply.
x(x - 2) = 80
x² - 2x - 80 = 0
(x + 8)(x - 10) = 0
x = -8 or 10
Reject x = -8 because we cannot have a negative number for friends.
x = 10
Answer: There were 10 friends in the original group.
Answer:
Point C and G. Refer to the attached image.
Explanation:
According to the attached image, the price and quantity combination the government would regulate this firm to get as close as possible to the most efficient point for society is C and G because, this is the point where marginal cost MC and Average Total Cost intercept and form lower equilibrium point.
This means that if company sell at this point they will not run at shortage and also for buying society, the quantity they will buy is also at the increase making it the most efficient point for the society.
