Difference between revisions of "2001 AMC 12 Problems/Problem 1"

(Problem)
(Solution)
 
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Suppose the two numbers are <math>a</math> and <math>b</math>, with <math>a+b=S</math>.
 
Suppose the two numbers are <math>a</math> and <math>b</math>, with <math>a+b=S</math>.
 
Then the desired sum is
 
Then the desired sum is
<math>2(a+3)+2(b+3)=2(a+b)+12=2S +12</math>, which is answer <math>\boxed{\text{(E)}}</math>.
+
<math>2(a+3)+2(b+3)=2(a+b)+12=2S +12</math>, which is answer <math>\boxed{\textbf{(E)}}</math>.
  
 
== See also ==
 
== See also ==

Latest revision as of 10:32, 8 November 2021

The following problem is from both the 2001 AMC 12 #1 and 2001 AMC 10 #3, so both problems redirect to this page.

Problem

The sum of two numbers is $S$. Suppose $3$ is added to each number and then each of the resulting numbers is doubled. What is the sum of the final two numbers?

$\textbf{(A)}\ 2S + 3\qquad \textbf{(B)}\ 3S + 2\qquad \textbf{(C)}\ 3S + 6 \qquad\textbf{(D)}\ 2S + 6 \qquad \textbf{(E)}\ 2S + 12$

Solution

Suppose the two numbers are $a$ and $b$, with $a+b=S$. Then the desired sum is $2(a+3)+2(b+3)=2(a+b)+12=2S +12$, which is answer $\boxed{\textbf{(E)}}$.

See also

2001 AMC 12 (ProblemsAnswer KeyResources)
Preceded by
First question
Followed by
Problem 2
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 12 Problems and Solutions
2001 AMC 10 (ProblemsAnswer KeyResources)
Preceded by
Problem 2
Followed by
Problem 4
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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