Raymond B. answered 12/28/22
Math, microeconomics or criminal justice
b+m=18
5b+12m = 139
5b+5m = 5(18)
7m = 139-90 =49
m =49/7 = 7 hours music lessons
b = 11 hours babysitting
Timmy H.
asked 01/27/21Karen makes $5 per hour babysitting and $12 per hour giving music lessons. One weekend, she
worked a total of 18 hours and made $139. Find the number of hours she spent babysitting and
giving music lessons.
Raymond B. answered 12/28/22
Math, microeconomics or criminal justice
b+m=18
5b+12m = 139
5b+5m = 5(18)
7m = 139-90 =49
m =49/7 = 7 hours music lessons
b = 11 hours babysitting
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