Hi Can you pls help me this one.

Question

When a welder works 2 hours and apprentice works for 5 hours, they earn a total of $145.

When the welder works 6 hour and the apprentice work for 8 h, they earn a total of $330. Determine the hourly rate for each worker.

Thank you.

Answer 1

2w+5a=145

6w+8a=330

multiply 1st by 3

6w+15a=435

subtract 2nd from 3rd

7a=105

a=105/7=$15 per hour for the apprentice

w =(145-5(15))/2=$35 per hour for the welder