Kain is a self-employed vehicle mechanic. Ivy is a professional dog sitter. Both are members of a barter club. They agreed to exchange their services for payment. Kain repaired the brakes on Ivy's car, and Ivy cared for Kain's poodle while he was away on vacation for two weeks. Kain usually charges $600 for brake repair, and Ivy usually charges $400 for dog sitting.

During the year, Kain had cash income of $18,000 and credit card income of $15,500. What is the total of Kain's gross receipts?

$15,900 $33,500 $33,900 $34,100

\\( 0 \\) \\( 0 \\) \\( 0 \\) \\( 0 \\) \\( 0 \\)