Question

Mitch is buying candy bars for his friends. He wants to give 2 bars to each friend, and he wants to have 10 spare. He can afford to buy 20 candy bars.
What is the algebraic sentence that will help him figure out how many friends he can treat?

Let f= the number of friends

Pls help

Answer 1

Mitch can afford to buy 20 candy bars: (total amount = 20)

He wants to give two bars to each friend. Let friend = f: (2f)

He wants 10 spare bars. Let spare bars = + 10: (+10)

set the equation: total = bars for friends + spare bars.

20 = 2f + 10 is your equation, or (C).

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Reason: Isolate friends, f. Note the equal sign, what you do to one side you do to the other. Do the opposite of PEMDAS.

20 = 2f + 10

Subtract 10 from both sides

20 (-10) = 2f + 10 (-10)

10 = 2f

Divide 2 from both sides

10/2 = 2f/2

f = 10/2

f = 5

5 friends in total

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hope this helps

Answer 2

Hi!

So we know that he has 20 candy bars.

= 20

He wants to give 2 to each friend. So 2 candy bars x friends.

2f

He's going to keep 10.

+10

Put all of the parts together.

2f + 10 = 20

The answer is 2f + 10 = 20

Hope this helps!

-Peredhel