Costa earned a gross commission of 2101.05 during july. what were his sales if his rate of commission is 10.5% of net sales and sales returns and allowances for the month were 8% of his gross sales?

  $21,750

Step-by-step explanation:

If returns and allowances were 8% of Costa's sales, then his net sales were 92% of his gross sales. His commission is figured on net sales, so we have ...

  commission = rate × net sales = rate × (92% × gross sales)

  $2101.05 = 0.105 × 0.92 × gross sales

  gross sales = $2101.05/(0.105×0.92) = $21,750

Costa's gross sales for July were $21,750.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6