Problema Solution
Karen makes $5 per hour babysitting and $12 per hour giving music lessons. one weekend she worked a total of 18 hours and made $139 how many hours did she spend babysitting?
Answer provided by our tutors
Let
x = hours babysitting
y = hours giving music lessons
x + y = 18
5x + 12y = 139
........
click here to see the system of equations solved for x and y
........
x = 11 hours
y = 7 hours
Karen spent 11 hours babysitting.