Question

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

If $x=$number of packs of trading cards, then which of the following 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 $10x-7$

Given:Number of packs of trading cards$=x$

Packs of trading cards that contain $10$ cards each$=10x$

She gave away $7$ cards$=-7$

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