document.write( "Question 306689: The average age of five boys is 15 years. A six boys joins them, making the average age 15 years and 6 months. What is the age of this sixth boy ?\r
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Algebra.Com's Answer #219437 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The average age of five boys is 15 years. \n" ); document.write( "The sum of their ages is 5*15 = 75 yrs. \n" ); document.write( "------------------------------ \n" ); document.write( "A sixth boys joins them, making the average age 15 years and 6 months. \n" ); document.write( "The sum of their ages is now 6*15.5 = 93 \n" ); document.write( "------------------------------ \n" ); document.write( "What is the age of this sixth boy ? \n" ); document.write( "He is 93-75 = 18 \n" ); document.write( "========================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========================= \n" ); document.write( "A 15 B 16 C 18 D 17 E 14 \n" ); document.write( " \n" ); document.write( " |