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Jules is making a peanut butter sandwich with two slices of bread and chunky peanut butter. If the mass of two slices of bread is 60 grams and the mass of the entire sandwich is 92 grams, which of the following equations can be used to find
x, the amount of peanut butter Jules used in grams?
Choose 1 answer:
(A)
30+x=92
(B)
60+x=92
(C)
120+x=92
(D)
60 x=92

Jules is making a peanut butter sandwich with two slices of bread and chunky peanut butter. If the mass of two slices of bread is $60$ grams and the mass of the entire sandwich is $92$ grams, which of the following equations can be used to find $x$ , the amount of peanut butter Jules used in grams? $\newline$ Choose $1$ answer: $\newline$ (A) $30+x=92$ $\newline$ (B) $60+x=92$ $\newline$ (C) $120+x=92$ $\newline$ (D) $60 x=92$

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Solve a system of equations using any method: word problems

Full solution

Q. Jules is making a peanut butter sandwich with two slices of bread and chunky peanut butter. If the mass of two slices of bread is

60

grams and the mass of the entire sandwich is

92

grams, which of the following equations can be used to find

x

, the amount of peanut butter Jules used in grams?

\newline

Choose

1

answer:

\newline

(A)

30+x=92

\newline

(B)

60+x=92

\newline

(C)

120+x=92

\newline

(D)

60 x=92

Identify Known Quantities: Identify the known quantities. $\newline$ We know the mass of two slices of bread is $60$ grams and the total mass of the sandwich is $92$ grams.
Set Up Equation: Set up the equation to find the mass of the peanut butter. $\newline$ Let $x$ be the mass of the peanut butter. The total mass of the sandwich is the sum of the mass of the bread and the mass of the peanut butter. $\newline$ So, the equation is: mass of bread + mass of peanut butter = total mass of sandwich $\newline$ $60$ grams + $x$ = $92$ grams
Match Given Options: Determine which of the given options matches the equation from Step $2$ . $\newline$ Option (A) $30 + x = 92$ is incorrect because it assumes each slice of bread is $30$ grams, but we are not dividing the bread into individual slices for this calculation. $\newline$ Option (B) $60 + x = 92$ is correct because it represents the total mass of the bread plus the mass of the peanut butter. $\newline$ Option (C) $120 + x = 92$ is incorrect because it incorrectly doubles the mass of the bread. $\newline$ Option (D) $60 \times x = 92$ is incorrect because it implies multiplication, not addition.

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