I need help with this word problem! its introductory to Algebra. Help!!!
Let x = the number of hours that Ryan works on job A. Since Ryan works 25 hours total, the number of hours he works on job B is 25 - x. We want:
x*($6.50) + (25-x)*($6.90) = $167.70
(6.5)x + 172.5 - (6.9)x = 167.7
-(0.4)x = -4.8
x = 12 hours on job A
So Ryan works 25 - 12 = 13 hours on job B