Elliot has twice as many trading cards as Sam. Elliot has 20 trading cards. write and equation and use it to determine the number of trading cards Sam has.

a. s+2 = 20;18**
b. s/2 = 20;40
c. 2s = 20;10
d. s-2=20;22

No.

What does twice mean?

twice as much I mean.

it means that Elliot had double the amount of cards that Sam has. (Example Elliot had 12 cards and Sam had 24 cards)

Nope.

Think, man!

Key word Double!

The correct equation to represent the given information is:

s = (1/2) * e

Where s represents the number of trading cards Sam has, and e represents the number of trading cards Elliot has.

The statement in the problem states that Elliot has twice as many trading cards as Sam, which means we can express this relationship as:

e = 2s

Next, we are given the value of e, which is 20 trading cards for Elliot. Plugging this value into the equation, we have:

20 = 2s

To find the number of trading cards Sam has, we need to isolate s. Dividing both sides of the equation by 2, we get:

s = 10

Therefore, Sam has 10 trading cards, which means option (c) is the correct answer.