Question

Meera bought packs of trading cards that contain $10$ cards each. She gave away $7$ cards.
$x=$ 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

The correct option is A $10x-7$

$\Rightarrow$ We have given, $x$ is number of packs of trading cards.

$\Rightarrow$ Pack of trading cards contain $10$ cards each.

$\therefore$ Total number of cards = $10x$

$\Rightarrow$ From total cards she gave away $7$ cards.

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