Difference between revisions of "2014 CEMC Gauss (Grade 7) Problems/Problem 3"

(Created page with "== Problem== Five times a number equals one hundred. The number is <math> \textbf{(A)}\ 50\qquad\textbf{(B)}\ 10\qquad\textbf{(C)}\ 15\qquad\textbf{(D)}\ 25\qquad\textbf{(E)}...")
 
 
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To find the solution, we can start by multiply <math>20</math> by <math>5</math> since it is one of the middle numbers.
 
To find the solution, we can start by multiply <math>20</math> by <math>5</math> since it is one of the middle numbers.
  
<math>20 * 5 = 100</math>, which happens to be equal to one hundred.
+
<math>20 \times 5 = 100</math>, which happens to be equal to one hundred.
  
 
Thus, the answer is <math>\boxed {\textbf {(E) } 20}</math>.
 
Thus, the answer is <math>\boxed {\textbf {(E) } 20}</math>.
 +
{{CEMC box|year=2014|competition=Gauss (Grade 7)|num-b=2|num-a=4}}

Latest revision as of 12:54, 18 October 2025

Problem

Five times a number equals one hundred. The number is

$\textbf{(A)}\ 50\qquad\textbf{(B)}\ 10\qquad\textbf{(C)}\ 15\qquad\textbf{(D)}\ 25\qquad\textbf{(E)}\ 20$

Solution 1

Let $n$ be the number that we are looking for. Setting up an equation, we have:

$5n = 100$

$n = \boxed {\textbf {(E) } 20}$

Solution 2 (answer choices)

To find the solution, we can start by multiply $20$ by $5$ since it is one of the middle numbers.

$20 \times 5 = 100$, which happens to be equal to one hundred.

Thus, the answer is $\boxed {\textbf {(E) } 20}$.

2014 CEMC Gauss (Grade 7) (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
CEMC Gauss (Grade 7)