Brain Teasers
Glasses or Contacts?
Logic-Grid
Logic Grid puzzles come with a handy interactive grid that will help you solve the puzzle based on the given clues.Logic-Grid
Three friends need glasses. One wears glasses, one wears contacts, and the other wears special sunglasses that can also become regular glasses. Figure out who wears what and how much they paid for their corrective eyewear.
Clues:
1. The sunglasses are 3 times the cost of the glasses, but the contacts are half the cost of the glasses.
2. Dennis spent under $200.
3. Alice spent more than Serena, who spent less than Dennis.
Clues:
1. The sunglasses are 3 times the cost of the glasses, but the contacts are half the cost of the glasses.
2. Dennis spent under $200.
3. Alice spent more than Serena, who spent less than Dennis.
Answer
The glasses are $165. The sunglasses are 3 times that, which means they cost $495. But the contacts are half the cost of the glasses, which is $82.50.Dennis spent under $200, so he didn't buy the sunglasses. Serena spent less than Dennis (who spent under $200) so she didn't buy the sunglasses either. Which means Alice bought the sunglasses. Dennis spent more than Serena, so he bought the glasses and Serena got the contacts.
Dennis/glasses/$165
Alice/sunglasses/$495
Serena/contacts/$82.50
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Comments
it's ok
Very easy - good starter logic grid.
True. Very good for a starter, and I like the way I had to deductively reason.
Good deductive reasoning with the clues. Nicely written. Keep up the good work!
good job i liked it
Not bad. npt very challenging, but good a;; the same.
YAWN!
Good teaser for early elementary students (2nd and 3rd graders). The ones I used to teach would have enjoyed it.
good job! easy, but lots of fun! i just made a puzzle just as easy, so i think this is really good!
It may have been easy, but it was still enjoyable. Not all teasers have to be difficult - easy ones balance out the hard ones. Good job.
the simple ones are the most fun!! they make you feel GREAT about your brain power
fun... does anyone really spend that much on sunglasses? yikes!
I liked it. a nice one to do first thing
I wish more people would spend that much on glasses and sunglasses. It's my job, and I make commission based on how much people spend.
Godd starter teaser, but next time include the names and prices in the story also, so people can do it without the grid. Also, you don't need the 2nd part of clue #1. Otherwise, i liked it and thought the math part in clue 1 was cool.
I liked it. It was easy, but the clues weren't so direct, which was really nice. Keep up the good work!
Great starter!! Keep coming with more!!
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