Brain Teasers
Reduce, Reuse, Recycle
For every 3kg of aluminium trash that Mr Green recycles, he can make 20 new biscuit tins. How many biscuit tins can he obtain from 11kg of aluminium trash and how many kilograms of aluminium material will be left over?
Hint
Simple maths.Answer
He can make 73 biscuit tins. He will have 0.05kg of aluminium material left.3kg make 20 tins. Therefore 9kg will make 60 tins.
11kg - 9kg = 2kg
20 tins use 3kg, 1 tin will use 0.15kg, 13 tins will use 1.95kg.
2kg - 1.95kg = 0.05kg.
60 tins + 13 tins = 73 tins.
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Comments
Oopw, I thought I had the answer, but I didn't finish it. Kinda tricky folks, but a great job.
Tricky tricky tricky...good job
Almost got me...good try with a good teaser.
That was a little too easy but great teaser!
Tricky? It's a simple--very simple--division problem that couldn't have been any less tricky. No teaser here folks. Shame on you if you needed a calculator or pencil and paper.
I believe they forgot to multiply by 20 to get the number of tins.
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