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More ways to get Braingle...

Two Pencils

Math brain teasers require computations to solve.

 

Puzzle ID:#317
Fun:*** (2.48)
Difficulty:** (1.3)
Category:Math
Submitted By:Phyllis*****!
Corrected By:jntrcs

 

 

 



Karin has two pencils. One is a good one, and one is a cheap one. The good pencil cost $1.00 more than the cheap one. Karin spent $1.10 for both pencils. How much did her cheap pencil cost?

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Answer

Five cents. The expensive pencil cost $1.05. You may have thought the answer was 10 cents, but that does not meet the requirement of the expensive pencil costing $1.00 MORE than the cheap pencil. If the cheap pencil cost 10 cents, the expensive pencil would only cost 90 cents more.
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Comments

Shawnheyhey123Aus*
Dec 09, 2005

1: I'm the first message! YEAH!!!!!

2: All you need to figure that problem out is common sense.

3: SUPER EASY!!!!!!
stephiesd**
Dec 15, 2005

there was a problem like this in my algebra book about popcorn costing $1 more than the bag. i was the only person who got it right. i was also the youngest person in the class.
cms271828
Jan 22, 2006

These problems are easy and boring, just basic simultaneous equations.
Can someone post some interesting puzzles on here
TehIgnored*us*
Mar 02, 2006

what was the calculator for..??


jj_is_coolAus*
Mar 29, 2006

if it is math,. there is always a calculator. n nm nhn bhh h hn n hj hm
calmsaviorAus**
Apr 24, 2006

pretty easy but cool
spazzyjazzy93Aus*
May 21, 2006

ha ha that was good
am i the only one that got this wrong?
elu93Aus*
Nov 07, 2006

Wow, i acutally got it! I never realized listening in class would come in handy...
Dishhead5Aau*
Dec 17, 2006

lol lol lol im young... less than 13 and i do 4-unit maths
redhead_babe15Aus*
Dec 29, 2006

that was easy, but it was good. some people i know would have said 10 cents.
hersheyuggetAmx*
Mar 29, 2007

easy heres the forula:
let x=cheap pencil
letx+1.00= good pencil
x+(x+1.00)=1.10
2x+1.00=1.10
2x=.10
x=.05
hersheyuggetAmx*
Mar 29, 2007

*formula



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