anonymous
  • anonymous
Please help! I don't understand this. Picture of the graph uploaded below. If 300 people donated blood in Springfield, about how many were AB+? (Note that you must multiply by the percent to find out.)
Mathematics
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
jim_thompson5910
  • jim_thompson5910
I honestly hate problems like this. They are designed to trip people up because of the wiggle room in the values you read off the graph. It's some percentage less than 5%, but the exact percentage? Who knows really. What percentage for AB+ did you get?
anonymous
  • anonymous
I mean I figured it had to be somewhere around 1% or 1.5% I can't really tell.

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More answers

jim_thompson5910
  • jim_thompson5910
The blue bar for AB+ is larger, and beyond the halfway point from 0% to 5% so I'd say the blue is like 3% maybe?
jim_thompson5910
  • jim_thompson5910
but this is an educated guess really
phi
  • phi
I would guess about 3%
jim_thompson5910
  • jim_thompson5910
the red bar is below halfway, so 1% or so in total, 1% + 3% = 4% for all of AB+ from both towns
jim_thompson5910
  • jim_thompson5910
whatever the percent is, multiply the decimal form of it by 300 to get your answer
phi
  • phi
It sounds like they want only Springfield?
jim_thompson5910
  • jim_thompson5910
oh right, nvm the other town then
anonymous
  • anonymous
I believe the answer is 9.
jim_thompson5910
  • jim_thompson5910
3% of 300 = 9, yes
anonymous
  • anonymous
Ah well, thank you for helping me make sense of it. I'll probably be back with another simple problem that i think is difficult!!
jim_thompson5910
  • jim_thompson5910
you're welcome

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