Nitin Is Paid on a Graduated Commission Scale

Multiple Choice

Nitin is paid on a graduated commission scale. His base salary is $250 per week and he receives commission at the rate of 2.5% for the first $5,000 of sales in a week, 4% on the next $10,000, and 4.5% on all further sales. How much will Nitin earn in a week in which his sales are $30,000?

A) $1,200
B) $1,350
C) $1,450
D) $1,600
E) $1,000