Answer:
Cara:108
Step-by-step explanation:
John: x number of cards
Cara: 12 times x number of cards(she has 12 times more cards than John)
Cara+John=117 cards
[tex]12 \times x + x = 117 \\ 13x = 117 \\ x = \frac{117}{13} \\ x = 9[/tex]
Cara has 12×9 cards, so she has 108 cards.
Hope this was helpful :)
