miazja miazja
  • 23-07-2015
  • Mathematics
contestada

in one eighth of an hour ,ms.wolf can grade one third of a stack of papers how many hours will it take her to grade 2 stacks 

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apologiabiology
apologiabiology apologiabiology
  • 23-07-2015
so 1/3 stack in 1/8 hour
2 stacks needed
2=6/3
1/3 in 1/8 hour
6/3 needed
6 times 1/3=6/3
6 times 6/8=3/4 hour
the answer is 3/4 hour or 45 mins
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