anonymous
  • anonymous
In a poll in a school, students picked whether they liked apples or oranges more. The ratio for this was 5:8. Five absent students were polled the next day and each of them preferred apples and the new ratio was 5:6. How many people were originally polled?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Say there are x students of which y like apples y:x-y = 5:8 y+5:x-y =5:6
anonymous
  • anonymous
You arent making any sense. whats the answer then?
dumbcow
  • dumbcow
it might be easier to look at it in fraction form y/(x-y) = 5/8 (y+5)/(x-y) = 5/6 y is the students who like apples, x is the total num of students x-y students like oranges you have to solve the system of proportions for x and y

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anonymous
  • anonymous
wouldnt the denominator for the second one be (x-y+5)
dumbcow
  • dumbcow
no because the num of students that liked oranges did not change
anonymous
  • anonymous
okay
anonymous
  • anonymous
so... what next?
dumbcow
  • dumbcow
i would solve one of the equations for y, then substitute into the other equation in order to find x
anonymous
  • anonymous
what do you get as your answer?
dumbcow
  • dumbcow
x = 39 y = 15
anonymous
  • anonymous
Thats correct! I'm a bit slow on systems... Thanks for showing me how to do it.

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