Answer:
12 5 dollar bills
20 50 dollar bills
Step-by-step explanation:
Let x = number of five dollar bills
Let y = number of fifty dollar bills
We have a total of 32 bills
x+y = 32
The total amount is 1060
5x+50y = 1060
We have 2 equations and 2 unknowns
x+y = 32
5x+50y = 1060
Multiply the first equation by -5 so we can eliminate x
-5x -5y = -5*32
-5x -5y =-160
Add this to the second equation
5x+50y = 1060
-5x -5y =-160
------------------------
45 y = 900
Divide each side by 45
45y/45 = 900/45
y = 20
There are 20 50 dollar bills
x+y = 32
x+20 = 32
Subtract 20 from each side
x+20-20 = 32-20
x = 12
There are 12 5 dollar bills
75 percent of 225 is 168.75

The ratio of overtime minutes to the cost of those minutes is 42 : 14.7
<em><u>Solution:</u></em>
Kayla went over the allotted cell phone minutes this month by 42 minutes
Therefore,
over time minutes = 42 minutes
Her regular bill is $39.95, but this month is was $54.65
Regular bill = $ 39.95
This month bill = $ 54.65
<em><u>Therefore, cost for overtime minute is given by:</u></em>
cost for overtime minute = This month bill - regular bill
cost for overtime minute = $ 54.65 - $ 39.95
cost for overtime minute = 14.7
<em><u>Thus ratio of over time minutes to cost of those minutes is given by:</u></em>

Thus the required ratio is found
Since BD is the perpendicular bisector of AC, then AB = BD, so:
6x = x+15
5x=15
x=3
CB = 3+15 = 18