anonymous
  • anonymous
Jan types at an average rate of 12 pages per hour .at that rate,how long will it take Jan to type 100 pages?
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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skullpatrol
  • skullpatrol
Any ideas?
skullpatrol
  • skullpatrol
|dw:1441016435634:dw|
imqwerty
  • imqwerty
Adjust ur typing speed to 12pages per hour and practically find out :P :D Jk

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skullpatrol
  • skullpatrol
|dw:1441016739363:dw|
anonymous
  • anonymous
a) 8 hours and 3 minutes b)8 hours and 15 minutes c)8 hours and 20 minutes d)8 hours and 30 minutes e)8 hours and 33 1/3 minutes and the answer is c but why friends
anonymous
  • anonymous
sorry friends i don t write the answers first bec the connection faild soory
imqwerty
  • imqwerty
Its okhay :)
anonymous
  • anonymous
ok can u help
skullpatrol
  • skullpatrol
|dw:1441016929675:dw|
imqwerty
  • imqwerty
1hour--------------------->12pages 1/12hours--------------->1page Multiply both sides by100 So 100/12hours---------->100pages
skullpatrol
  • skullpatrol
|dw:1441017127325:dw|
imqwerty
  • imqwerty
So 100/12hrs = 100/12 x60mins r needed to type 100pages So he needs 500mins So that is 8hours 20mins :)
anonymous
  • anonymous
sorry imqwerty but how u know that 1/12 hours ----- 1pages
phi
  • phi
a few ways, but this might be the best: rate * time = amount this is almost the same problem as if you go 12 miles per hour, how long to go 100 miles? here rate is 12 pages per hour 12 * t = 1 page (this is to find how long it takes to type 1 page) t = 1/12
phi
  • phi
but of course you really want 12 * t = 100 and to solve, divide both sides by 12 t= 100/12
phi
  • phi
you could also use ratios \[ \frac{12 \ pages}{1 \ hour}= \frac{100 \ pages}{x \ hours} \]
anonymous
  • anonymous
ok phi but the answer will be by point how i keep it 8 h and 20 how i know that the anser is 20 m not other minutees
anonymous
  • anonymous
plz help
phi
  • phi
first what is 100/12 ?
anonymous
  • anonymous
100/12 is 8.333333333
anonymous
  • anonymous
or 25/3
phi
  • phi
ok, write it as a mixed number 8 and a fraction
anonymous
  • anonymous
49/3
imqwerty
  • imqwerty
@Nourage i jst divided both sides by 12 to find out time taken to write 1 page :)
phi
  • phi
like this 25/3 3 goes into 25 8 times with a remainder of 1 write the remainder over 3 \[ \frac{25}{3}= 8 \frac{1}{3} \]
phi
  • phi
that means it takes 8 and 1/3 hours that is a good answer, but they have the choices as 8 and some number of minutes. we have to change 1/3 of an hour into minutes we know 1 hour is 60 minutes 1/3 * 60 = number of minutes.
anonymous
  • anonymous
oh ya thank u very very much friend u are the best (phi) and thank u friends all of u helps me
anonymous
  • anonymous
thanks friends

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