Question

Tom Paid a mechanic H dollars per hour for a 4 hour job plus $120 for parts. The total charge was $280. Which equation can you used to determine how much the mechanic charge per hour?

Answer 1

280= H×4+120

280-120= H×4+120-120

160= H×4

160÷4= H×4÷4

40= H

Answer 2

h(4)+120=280

40 dollars per hour