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<font size="4" style="color: rgb(0, 0, 0); font-style: italic;"><span style="font-family: times new roman,times,serif;"> En una empresa de ingeniería se fabrican diferentes piezas de metal. <br /> Para hacerlas se utilizan aleaciones de <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mn»2«/mn»«/math»</span> elementos. Por ejemplo, para fabricar #t1 se emplean <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#a1«/mi»«/math»</span> partes de #t2 y <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#a2«/mi»«/math»</span> partes de #t3. Si #t4 pesa </span></font><font size="4" style="font-family: times new roman,times,serif; font-style: italic;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#b1«/mi»«/math»</span></font><font size="4" style="color: rgb(0, 0, 0); font-style: italic;"><span style="font-family: times new roman,times,serif;"> kg., entonces contiene:</span></font><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span"><br />1. {1:SA:=\#s1#¡Muy bien! Sigue así!}</font></font><font size="4" style="color: rgb(0, 0, 0); font-style: italic;"><span style="font-family: times new roman,times,serif;"> kg. de #t2</span><br style="font-family: times new roman,times,serif;" /><span style="font-family: times new roman,times,serif;">2. </span></font><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span">{1:SA:=\#s2#¡Muy bien! Sigue así!} kg. de #t3<br /><br /><span style="color: rgb(153, 0, 0);">Obs.: <br /></span></font></font> <ul> <li><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span"><span style="color: rgb(153, 0, 0);">Para separar los decimales, escribe un punto en vez de coma.</span></font></font></li> <li><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span"><span style="color: rgb(153, 0, 0);">Aproxima a la centésima.</span></font></font></li> </ul><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span"><span style="color: rgb(153, 0, 0);"><br /></span></font></font><font size="4" style="font-family: times new roman,times,serif; font-style: italic;"><b id="internal-source-marker_0.6160804741084576" style="color: rgb(0, 0, 0); text-transform: none; line-height: normal; text-indent: 0px; letter-spacing: normal; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2;"><span style="color: rgb(0, 0, 0); font-size: 15px; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span></b></font><font class="Apple-style-span" face="verdana, arial, helvetica, sans-serif" size="4" style="color: rgb(0, 0, 0); font-family: times new roman,times,serif; font-style: italic;"><font class="Apple-style-span"><br /></font></font>
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<font size="4" style="font-family: times new roman,times,serif; font-style: italic;">Solución<br /><br />Si #t4 pesa <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#b1«/mi»«/math»</span> kg. y es una mezcla de #t2 y #t3, podemos determinar cuántos kl. corresponden a cada uno</font><font size="4"><span style="font-family: times new roman,times,serif; font-style: italic;"> de los metales al sumar las partes: </span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#a1«/mi»«mo»+«/mo»«mi»#a2«/mi»«mo»=«/mo»«mi»#a3«/mi»«/math»</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><span style="font-family: times new roman,times,serif; font-style: italic;">Luego, dividimos el peso total de #t4 en </span><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#a3«/mi»«/math»</span><span style="font-family: times new roman,times,serif; font-style: italic;"> para saber a cuánto equivale cada parte:</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /></font><font size="4" style="font-family: times new roman,times,serif; font-style: italic;"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfrac»«mrow»«mi»#b1«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/mrow»«mi»#a3«/mi»«/mfrac»«mo»=«/mo»«mi»#a4«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/math»</span></font><font size="4"><br style="font-family: times new roman,times,serif; font-style: italic;" /><span style="font-family: times new roman,times,serif; font-style: italic;">Entonces, para conocer la cantidad de kg. de #t2 que se utilizaron, realizamos el siguiente cálculo:</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»#a4«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mi»#a1«/mi»«mo»=«/mo»«mi»#a5«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/math»</span><span style="font-family: times new roman,times,serif; font-style: italic;"> </span><br style="font-family: times new roman,times,serif; font-style: italic;" /><span style="font-family: times new roman,times,serif; font-style: italic;">Por lo tanto, la cantidad de #t2 que posee #t4 es </span><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#a5«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/math»</span><span style="font-family: times new roman,times,serif; font-style: italic;">. Posteriormente, para calcular cuántos kg. de #t3 se utilizaron, realizamos la siguiente operación:</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»#a4«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mi»#a2«/mi»«mo»=«/mo»«mi»#a6«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/math»</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /><span style="font-family: times new roman,times,serif; font-style: italic;">Por consiguiente, la cantidad de #t3 que contiene #t4 es </span><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#a6«/mi»«mo»§nbsp;«/mo»«mi»k«/mi»«mi»g«/mi»«/math»</span><br style="font-family: times new roman,times,serif; font-style: italic;" /><br style="font-family: times new roman,times,serif; font-style: italic;" /></font>
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