Answer:
For more than 180 minutes of phone use.
Explanation:
Let m represent number of minutes of phone use in a month.
We have been given that in Plan A, there is no monthly fee, but the customer pays $0.06 per minute of use.
The cost of using m minutes in plan A would be .
We are also told that in Plan B, the customer pays a monthly fee of $4.80 and then an additional $0.03 per minute of use.
The cost of using m minutes in plan B would be .
To find the amounts of monthly phone when Plan A will cost more than Plan B, we will set cost of plane A greater than cost of plan B as:
Let us solve for m.
Therefore, Plan A will cost more than Plan B for more than 180 minutes of phone use.
Practicia completes the job in one hour = 1/4
Naoimi completes the job in one hour = 1/5
If Parcticia and Naoimi does it together,let us suppose in x number of hours.
The equation so form is:
(1/4)*x + (1/6)*x = 1 (i.e job finished)
The Least common multiple(LCM) of 4 and 6 = 12
12*(1/4)*x + 12*(1/6)*x = 12*1
Therefore, solving the equation we get,
3x + 2x = 12
5x = 12
x = 12/5
x= 2 2/5 hours or 2.24 hours
Therefore number of hours they took to complete the work is 2 hours and 24 minutes or 2.24 hours.
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Answer:
-20.27%
Explanation:
Value = ($14,750 / $18,500) - 1 = -20.27%