Ben = 1 unit, Louis = 6 units. Altogether 7 units = 42 cards. Louis has 5 units more than Ben.<br><br>[[model:questions/solutions/q2283.png]]<br><br>• 7 units → 42<br>• 1 unit → 42 ÷ 7 = 6 (Ben)<br>• Louis − Ben = 5 units → 5 × 6 = 30<br><br>Louis has 30 more cards than Ben.<br>Check: Ben 6 + Louis 36 = 42, and 36 − 6 = 30. ✓