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Difference between revisions of "1977 AHSME Problems/Problem 1"

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== Problem 1 ==
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If <math>y = 2x</math> and <math>z = 2y</math>, then <math>x + y + z</math> equals
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<math>\text{(A)}\ x \qquad
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\text{(B)}\ 3x \qquad
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\text{(C)}\ 5x \qquad
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\text{(D)}\ 7x \qquad
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\text{(E)}\ 9x</math>
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==Solution==
 
==Solution==
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Solution by e_power_pi_times_i
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<math>x+y+z = x+(2x)+(4x) = \boxed{\text{(D)}\ 7x}</math>

Latest revision as of 11:24, 21 November 2016

Problem 1

If $y = 2x$ and $z = 2y$, then $x + y + z$ equals

$\text{(A)}\ x \qquad \text{(B)}\ 3x \qquad \text{(C)}\ 5x \qquad \text{(D)}\ 7x \qquad \text{(E)}\ 9x$


Solution

Solution by e_power_pi_times_i

$x+y+z = x+(2x)+(4x) = \boxed{\text{(D)}\ 7x}$

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