Kristen needs to earn $320 in commission this week. She earns 8% what she sells at the electronics store. How many dollars worth of
merchandise does she need to sell? Round to the nearest dollar. *

She needs to sell $4,000 worth of merchandise.

If she needs to earn $320, and she earns 8% commission, you’re looking for what 8% of original amount equals $320.

X = original amount
8% = .08
$320 = amount needed

X * .08 = $320.
X = $320/.08
X= $4,000

Kristen needs to sell $4,000 worth of merchandise at an 8% commission rate to earn $320.