Question

Meera bought packs of trading cards that contain $10$ cards each. She gave $7$ cards to her friend.
$x=$ Number of packs of trading cards
Which expression shows the number of cards left with Meera?

• A. $10x-7$
• B. $7x-8$
• C. $5-10x$
• D. $8-5x$

Answer 1

Answer: (A)

$10x-7$

Number of cards in 1 pack $=10$

Number of cards in $x$ packs $=10x$

Number of cards given to friend $=7$

Number of cards left with Meera $=10x-7$