Help us with this algebra question?

[Jenny in Florida]

My son had the following question in his math lesson this morning:

The number of juniors in the jazz band at Central High School is 14 less than twice the number of sophomores. Let j represent the number of juniors in the jazz band. Write an expression for the number of sophomores in the band.

The answer given wasn't what we expected, and I can't explain to him what (if anything) he did wrong.

Thanks!

--Jenny

[Ali in OR]

Here's what I got:

j=# of juniors

Let s=# of sophomores

j=2s-14
Solve for s to get expression for number of sophomores:
j+14=2s
1/2(j+14)=s

[8FillTheHeart]

My son had the following question in his math lesson this morning:

The number of juniors in the jazz band at Central High School is 14 less than twice the number of sophomores. Let j represent the number of juniors in the jazz band. Write an expression for the number of sophomores in the band.

The answer given wasn't what we expected, and I can't explain to him what (if anything) he did wrong.

Thanks!

--Jenny

I would set it up
j=junior
s=soph

j=2s-14
j+14=2s
(j+14)/2=s

[Jenny in Florida]

Both of you came at this the same way we did. I'm going to go ahead and give him credit for a correct answer.

I just wanted to make sure I wasn't being spacey!

--Jenny

[nutmeg]

I agree with the answers given here, but I'm dying to know the answer given in your book?