document.write( "Question 481874: two missiles sped directly at each other, one at 1200 km/h and the other at 1500 km/h. Initially they are 8190 km apart and are fired simultaneously. After what interval of time they collide?\r
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Algebra.Com's Answer #329913 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "Since they are headed directly at each other, they are approaching each other at the sum of their speeds. Divide the initial distance between them by the sum of their speeds.\r
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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