Cad Ltd has the following information relating to chocolates produced.

Choc

Wicked

Vanilla

Total

Unit sales price

$$5$

$$4$

$$3$

Variable cost per

unit

$$3$

$$1$

$$1\mathrm{.}50$

Sales mix $

$70\%$

$20\%$

$10\%$

Fixed costs

$$21500$

Target profit

$$32250$

How many units in total must be sold to earn the target profit? $($Ignore taxes.$)$

d$.25000$

a$.21500$

b$.27750$

c$.30000$