radomes.openskiesproject.org
mat14 mat14
  • 14-03-2016
  • Mathematics
Answered

in a class book order, 2/3 of the books are fantasy and 1/4 of the books are biography. if the order contains 60 books, how many books are either fantasy or bio?

Verified Answer :

boobearrr13
boobearrr13 boobearrr13
  • 14-03-2016

55 of the books are either fantasy or bio

Answer Link
apologiabiology
apologiabiology apologiabiology
  • 16-03-2016

so we know that 2/3=fantasy
1/4=bio
so bio+fantasy=2/3+1/4
2/3 times 4/4=8/12
1/4 times 3/3=3/12
2/3+1/4=8/12+3/12=11/12

11/12 of 60 are bio or fantassy
mltiply
11/12 times 60=660/12=55

answer is 55

Answer Link

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