Question

Which algebraic expression represents "one-third of the number s, plus t"?

A) s/3 + t
B) 2s + t
C) 2 + ts
D) 1/2 + s + t

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Answer 1

The answer is A) s/3 + t

Explanation:

The "plus t" portion of the equation is fairly straightforward, and is found in every equation apart from C, immediately ruling it out. Lets assume s=6. Then, one third of 6 would be 2. 2s = 12, and 12 is not equal to 2, so B is not the answer. 1/2 + 6 = 6 1/2, and 6 1/2 is not equal to 2, so D is not the answer. 6/3 = 2, which is one third of 6, so A is the answer.

Answer 2

A) s/3 +t

Explanation:

To represent 1/3 of a number, we can simply divide this number by 3, meaning if s is the number, 1/3 of s would be s/3. Now to add t all we have to do is + t, making our answer s/3 + t