Luthan Company uses a predetermined overhead rate of $23.40 per direct labor-hour. This predetermined rate was based on 11,000 estimated direct labor-hours and $257,400 of estimated total manufacturing overhead. The company incurred actual total manufacturing overhead costs of $249,000 and 10,800 total direct labor-hours during the period. Determine the amount of manufacturing overhead that would have been applied to units of product during the period. Manufacturing overhead applied $ 249000/10800 = 23.06 (but this is not the right answer, why?) Osborn Manufacturing uses a predetermined overhead rate of $18.20 per direct labor-hour. This predetermined rate was based on 12,000 estimated direct labor-hours and $218,400 of estimated total manufacturing overhead. The company incurred actual total manufacturing overhead costs of $215,000 and 11,500 total direct labor-hours during the period. Determine the amount of underapplied or overapplied manufacturing overhead for the period. Manufacturing overhead Underapplied $18.70 (but this is not the right answer, why?) Assuming that the entire amount of the underapplied or overapplied overhead is closed out to Cost of Goods Sold, what would be the effect of the underapplied or overapplied overhead on the company's gross margin for the period? The gross margin would decreased by $______________