## anonymous 2 years ago Am I remembering how to solve percentage increase right?

1. anonymous

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. anonymous

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. anonymous

amount of change = (new amount - original amount)

4. anonymous

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. anonymous

so, yes you've got the right "formula" but amt of change is (143-130) and not 143

6. anonymous

sorry i was afk

7. anonymous

so i solved for the wrong thing?

8. anonymous

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. anonymous

i'm supposed to subtract them or what are you trying to say

10. anonymous

$\frac{ 143-130 }{ 130} = \frac{ x }{ 1000 }$

11. anonymous

x/100

12. anonymous

13/130 = x/100?

13. anonymous

yes

14. anonymous

so i would multiply across and add a 1 under 100, no?

15. anonymous

and that would be 13k over 130

16. anonymous

which reduces to 10 so my answer is 10 percent?

17. anonymous

hey they left

18. anonymous

(new value - old value) / old value (143 - 130) / 130 = 13/130 = .1 .1 x 100 = 10% your answer is correct...10% increase

19. anonymous

thank you all for the help i got it now