Question 1002247
x, hours done first mechanic
y, hours done second mechanic


Account for hours - already described.
First mechanic, 5 hours
Second mechanic, 15 hours


Now, account for the money:  {{{5x+15y=1600}}}.


Description also said, if symbolized, {{{x+y=150}}}.


Solve the system, {{{system(5x+15y=1600,x+y=150)}}}.