Math Is Fun Forum

Mister_Scary

Member

Registered: 2010-10-22

Posts: 30

Please help with a few questions????

I know I should have paid more attention in high school, but now I could really use some help with a few math questions......Thanks in advance!

"Suppose you're given the formula R = s + 2t. If you know that s is three times greater than t, how could you rewrite the formula?"

A. R = 3(s + 2t)

B. R = 3(s + t)

C. R = 5s

D. R = 5t

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Please help with a few questions????

Hi Mister_Scary;

If you know that s is 3 times greater than t then you can say s = 3t. Now wherever you see an s you can substitute 3t for it, So:

R = s + 2t

Just replace the s with 3t.

R = 3t + 2t

R = 5t.

So D is the correct answer.

Welcome to the forum.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Mister_Scary

Member

Registered: 2010-10-22

Posts: 30

Re: Please help with a few questions????

Thank you very much!  I'm one sixth closer to my goal now.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Please help with a few questions????

Hi;

I'm one sixth closer

Careful you did a bit math there. You would not want to hurt your reputation.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.