2014 CEMC Gauss (Grade 7) Problems/Problem 3

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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)