Let x represent the number of $10 traveler's checks she has.
Let y represent the number of $20 traveler's checks she has.
![10x+20y=300 \\x+y=22](https://tex.z-dn.net/?f=10x%2B20y%3D300%0A%5C%5Cx%2By%3D22)
Solve system of equations.
Answer:
x = 13
Step-by-step explanation:
Solve for x:
x + 4 = 17
Subtract 4 from both sides:
x + (4 - 4) = 17 - 4
4 - 4 = 0:
x = 17 - 4
17 - 4 = 13:
Answer: x = 13
Hello,
Please, see the attached files.
Thanks.
Remember part/whole...
Your answer should be 840 students
6.5 hours is equal to:
60 mins x 6 + 30 mins = 390 mins
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42.25 / 390 = 13/120
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Now there are 60 minutes in an hour, so what we do is multiply 13/120 by 60 to find out how much you earn per hour...
13/120 x 60 = 6.5
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You earn $6.50 per hour.