Lena earns 45% of commission on the amount of sale she does.
She sold $200.00 worth cosmetics to a customer.
So we need to find 45% of $200.00.
a% of b is given by:
[tex]\frac{a}{100} \times b[/tex]
Using the formula above we can find the amount of commission earned by Lena:
[tex]\frac{45}{100} \times 200=45\times 2=90[/tex]
So Lena earned $90.00 in commission over the sale worth $200.00 that she made.
