Question

Each red stick is 4cm longer than each blue stick. Five red sticks and two blue sticks together measure exactly 100cm. How long is a blue stick?

Answer 1

Set up a system of equations to solve these types of problems. Do you know how to do this for this problem?

Answer 2

I would love to say that I do, but I'm blanking so bad right now and do not.

Answer 3

Alright, well we know that a red stick is 4 cm longer than a blue stick. So one equation we can set up is:

r = b + 4

where r is the length of a red stick and b is the length of a blue stick.

What's the other equation we can set up?

Answer 4

100=5(b+4) +2b?

Answer 5

You skipped a step, but absolutely! That's where we were headed!

Solve for b and you're done!

Answer 6

Oh, okay! Thanks!

Answer 7

yea

Answer 8

Would the blue stick be 11.4 cm?

Answer 9

Indeed it would :)

Answer 10

Alright! Thank you so much!