You have been provided with the following information: If sales decrease by 500 units, how much will fixed expenses have to be reduced by to maintain the current operating profit of $6,000?

$3,000

Explanation:

                                            Per Unit             Total

Sales                                     $15                    $45,000

Less variable expenses       $9                     -$27,000

Contribution margin            $6                      $18,000

Less fixed expenses                                     -$12,000

Operating profit                                             $6,000

first we must calculate total unit sales = $45,000 / $15 = 3,000 units

if 500 less units are sold, then the total contribution margin will be $15,000, and if you want to keep operating profit at $6,000, your fixed expenses must equal:

contribution margin - fixed expenses = operating profit

$15,000 - fixed expenses = $6,000

$15,000 - $6,000 = fixed expenses

$9,000 = fixed expenses

since the current fixed expenses are $12,000 and you need them to be $9,000, they must be reduced by $3,000

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

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