Answer and Explanation:
The computation is shown below;
a. The amount of the total dollar sales is
Pretax income = Sales value - Variable cost - Fixed cost
where,
Sales value - variable cost = Contribution margin
$365,100 = Contribution margin - $251,000
So,
Contribution margin = $616,100
Now
Contribution margin = Sales value × Contribution margin ratio
$616,100 = Sales value × 61%
So,
Sales value = $1,010,000
b. The total variable cost is
= Sales - fixed cost - pre tax income
= $1,010,000 - $251,000 - $365,100
= $393,900