Difference between revisions of "2014 AMC 10B Problems/Problem 7"
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<math>100\left(\frac{A-B}{B}\right)=x</math>. <math>\boxed{\left(\textbf{A}\right)}</math> | <math>100\left(\frac{A-B}{B}\right)=x</math>. <math>\boxed{\left(\textbf{A}\right)}</math> | ||
+ | |||
+ | == Solution 2== | ||
+ | |||
+ | The question is basically asking the percentage increase from <math>B</math> to <math>A</math>. We know the formula for percentage increase is <math>\frac{\text{New-Orignial}}{\text{Original}}</math> | ||
==See Also== | ==See Also== | ||
{{AMC10 box|year=2014|ab=B|num-b=6|num-a=8}} | {{AMC10 box|year=2014|ab=B|num-b=6|num-a=8}} | ||
{{MAA Notice}} | {{MAA Notice}} |
Revision as of 18:00, 10 January 2020
Contents
Problem
Suppose and A is
% greater than
. What is
?
Solution
We have that A is greater than B, so
. We solve for
. We get
.
Solution 2
The question is basically asking the percentage increase from to
. We know the formula for percentage increase is
See Also
2014 AMC 10B (Problems • Answer Key • Resources) | ||
Preceded by Problem 6 |
Followed by Problem 8 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |
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