# math

posted by
**vinci** on
.

Andrew's salary is $1200 a month plus 4% commission on all his sales. What must the amount of his sales be to earn at least $1600 each month?

posted by
**vinci** on
.

Andrew's salary is $1200 a month plus 4% commission on all his sales. What must the amount of his sales be to earn at least $1600 each month?