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danijo1814

  • 2 years ago

Am I remembering how to solve percentage increase right?

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  1. danijo1814
    • 2 years ago
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    Each year, Terrell buys a plane ticket to visit his grandmother for a week. Last year, he paid $130. This year, he paid $143. What was the percent increase in the cost of his plane ticket? Show your work.

  2. danijo1814
    • 2 years ago
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    that is the question this is my answer: amount of change/original amount = percent of change/100 143/130 = x/100 143 x 100 = 14,300 130 x 1 = 130 so we now have the fraction 14,300 over 130 which reduces to 110 over 1 which is actually just 110. So x = 110. Our percentage increase is 110.

  3. Euler271
    • 2 years ago
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    amount of change = (new amount - original amount)

  4. Psymon
    • 2 years ago
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    Well, only a 10% increase. Realize that 100% is the old amount of 130. So if youre going to increaseby 100% + 10%, bit much, eh?

  5. Euler271
    • 2 years ago
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    so, yes you've got the right "formula" but amt of change is (143-130) and not 143

  6. danijo1814
    • 2 years ago
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    sorry i was afk

  7. danijo1814
    • 2 years ago
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    so i solved for the wrong thing?

  8. Euler271
    • 2 years ago
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    pasting what you wrote: that is the question this is my answer: amount of change/original amount = percent of change/100 143/130 = x/100 amount of change is (new amount - original amount) = 143-130

  9. danijo1814
    • 2 years ago
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    i'm supposed to subtract them or what are you trying to say

  10. Euler271
    • 2 years ago
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    \[\frac{ 143-130 }{ 130} = \frac{ x }{ 1000 }\]

  11. Euler271
    • 2 years ago
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    x/100

  12. danijo1814
    • 2 years ago
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    13/130 = x/100?

  13. Euler271
    • 2 years ago
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    yes

  14. danijo1814
    • 2 years ago
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    so i would multiply across and add a 1 under 100, no?

  15. danijo1814
    • 2 years ago
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    and that would be 13k over 130

  16. danijo1814
    • 2 years ago
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    which reduces to 10 so my answer is 10 percent?

  17. danijo1814
    • 2 years ago
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    hey they left

  18. kelliegirl33
    • 2 years ago
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    (new value - old value) / old value (143 - 130) / 130 = 13/130 = .1 .1 x 100 = 10% your answer is correct...10% increase

  19. danijo1814
    • 2 years ago
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    thank you all for the help i got it now

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