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

Question

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] · Answer 1 · 2022-04-09T19:19:50+03:00

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>