Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2006-01-18 03:44:04

Math Guy
Member
Registered: 2005-10-12
Posts: 20

The Great Mind-Boggling Antifreeze Mixture

RAY: "My car's cooling system holds 12 quarts."

"Right now it has four quarts of antifreeze, and eight quarts of water. How much of this mixture do I have to drain out and replenish with straight antifreeze in order to get a 50–50 mixture?"

I thought I would add a "Part B" to this puzzler. How much of this mixture do I have to drain out if I'm adding antifreeze that's already been mixed 50–50 to get a 50–50 mix?

Offline

#2 2006-01-18 04:13:27

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: The Great Mind-Boggling Antifreeze Mixture


Why did the vector cross the road?
It wanted to be normal.

Offline

#3 2006-01-30 15:26:36

Math Guy
Member
Registered: 2005-10-12
Posts: 20

Re: The Great Mind-Boggling Antifreeze Mixture

That is correct!

Offline

Board footer

Powered by FluxBB