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Hatshy [7]
3 years ago
5

Kristy makes 5$ per hour babysitting and 12$ per hour giving music lessons. One weekend, she worked a total of 18 hours and made

$139.00. How many hours did she spend babysitting? Write your answer in complete sentences.
Mathematics
1 answer:
MariettaO [177]3 years ago
3 0
Let Karen works x hours baby sitting
So, she worked (18-x) hours giving music lessons
So,
According to question
5x + 12(18-x)=139
This gives
7*x=77
x=11
So,
<span>Karen worked <em>11 hours baby sitting </em>and (18-11)=7 hours giving music lessons</span>
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