Question

erica earned 30,000 bonus points on her computer assignment this is ten times as many points as she earned last week how many bonus points did erica earn last week

Answer 1

If last week she made x points, and this week she made 30, 000
then 30 000 = 10x (solve for x) 
        30 000/10 = x
so she made 3000 points last week