Sally needs 2/3 of a pound of potatoes. this is 1/3 of a pound more than 4/3 of the potatoes sally has in her pantry

Lets assume, Sally has X pound of potatoes in her pantry.

So, 4/3 of the potatoes Sally has in her pantry =

Now, Sally needs 2/3 pound of potatoes and this 2/3 pound of potatoes is 1/3 pound more than that

So the representing equation will be:

(subtracting from both sides)

(multiplying both sides by 3)

So, Sally has pound of potatoes in her pantry.

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answer: d.) the total number of protons and neutrons is 15

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