Mike bought 3 tennis and 2 badminton rackets for $300. If he buys 2 badminton and 2 tennis rackets, he pays $240.How much is a tennis racket?

2 answers

5 rackets = $300 and 4 rackets = $240.

300 - 240 = ?
that answer was marked wrong, are they assuming that the tennis rackets cost more??