Question

Marcus and Tony work for​ Lombardo's Pipe and Concrete. Mr. Lombardo is preparing an estimate for a customer. He knows that Marcus lays a slab of concrete in 3 hours. Tony lays the same size slab in 2 hours. If both work on the job and the cost of labor is $48.00 per​ hour, decide what the labor estimate should be.

Answer 1

$57.60

Explanation:

Marcus lays a slab of concrete in 3 hours. Tony lays the same size slab in 2 hours. The number of hours used by both men will be:

1/3x + 1/2x = 1

2x + 3x = 6

5x = 6

x = 6/5 = 1.2 hours.

The cost of labor will be:

= 1.2 hours × $48

= $57.60