Brain Teasers
Bird Brains
If 3 thistled thrushes eat 3 packs of birdseed in 3 weeks and 4 feathery finches eat 4 packs of birdseed in 4 weeks and 6 coloured cockatoos eat 6 packs of birdseed in 6 weeks then how much birdseed will feed 12 thistled thrushes, 12 feathery finches and 12 coloured cockatoos for 12 weeks?
Hint
It must be dozens and dozens!Answer
3 thrushes eat 3 packs in 3 weeks3 thrushes eat 12 packs in 12 weeks
12 thrushes eat 48 packs in 12 weeks.
4 finches eat 4 packs in 4 weeks
4 finches eat 12 packs in 12 weeks,
12 finches eat 36 packs in 12 weeks.
6 cockatoos eat 6 packs in 6 weeks,
6 cockatoos eat 12 packs in 12 weeks,
12 cockatoos eat 24 packs in 12 weeks
So 48+36+24 = 108 packs.
Answer: 108 packs.
Hide Hint Show Hint Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments
Too easy--that is for the difficulty level. But cleverly written.
"Two Aging Mathemeticians" have the same difficulty rating, yet this one can be done in one's head.
BUT STILL--GOOD ONE! THANKS FOR THE TEASER!
-Steve
"Two Aging Mathemeticians" have the same difficulty rating, yet this one can be done in one's head.
BUT STILL--GOOD ONE! THANKS FOR THE TEASER!
-Steve
I chose this brain teaser because birds are my favourite animals and math is one of my favourite subjects. I loved this brain teaser and found that there was a lot of adding. It was very interesting and was similar to the ones we do at school but longer.
By Jacinta Nowland
By Jacinta Nowland
Cute wording but too easy.
4^2*3 + 3^2*4 + 2^2*6 = 108
4^2*3 + 3^2*4 + 2^2*6 = 108
To post a comment, please create an account and sign in.
Follow Braingle!