Answer:
It depends upon the contribution per unit of each product or in other words it depends on composite contribution per unit.
Step-by-step explanation:
The composition matters a lot because of the fact that every product has its own contribution per unit. So if the product chrome has $1 contribution per unit and standard scooter has $2 contribution per unit. Also suppose that $6 is the total fixed cost. Then the priority to sell must be standard scooter, because it has higher contribution. Secondly if we only sell chrome scooters then total 6 ($6 fixed cost - 6 units * $1 contribution per unit) units must be sold and if we only sell standard scooters then only 3 ($6 fixed cost - 3 units * $2 contribution per unit) units must be sold to breakeven. Suppose, if we reduce standard scooters from 3 scooters to 2 units ($6 fixed cost - 2 units * $2 contribution per unit) then their will be loss of $2 which can be reduced to zero by selling 2 chrome scooters ($2 loss - 2 units * $1 contribution per unit).
So this is how contribution per unit affects the composite breakeven units and most important thing is that if the composite contribution per unit has increased then the breakeven units will decrease and vice versa.