Tara would like to finish 2/5 of her book by next Friday.If the book has 203 pages,about how many pages does she need to read?



Answer :

To get the answer we can use proportion
2/5 ------------------ 203
3/5 ------------------ x
crossmultiply now
3/5*203=2/5*x
[tex] \frac{609}{5} = \frac{2}{5} x \\ 609=2x \\ x=304.5[/tex] - its the answer
2/5 of 100 is 40, multiply that by two and you get 80/200. 80 pages. 

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