Algebra.Com's Answer #839519 by ikleyn(52867)![\"\"](\"/images/stars/stars-13.gif\")  
You can put this solution on YOUR website!
.
\n" );
document.write( "Please help me with this two questions.
\n" );
document.write( "1. A lorry has a velocity of 90 km/h. How far does the lorry travel in 3/4 minutes?
\n" );
document.write( "2. A motorist travel's from town A to B, 145 km in 3hrs 45 minutes. Find it's average speed?
\n" );
document.write( "Please I would like to get the solving to the questions in case of next time. Thank you.
\n" );
document.write( "~~~~~~~~~~~~~~~~~~\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "\r\n" );
document.write( "(1) As you know, 1 hour is 60 minutes.\r\n" );
document.write( "\r\n" );
document.write( " Hence, 1 minute =  of an hour.\r\n" );
document.write( "\r\n" );
document.write( " Next, 3/4 of a minute is  of an hour =  =  of an hour.\r\n" );
document.write( "\r\n" );
document.write( " Finally, the distance is the product of the speed by the time, or, in this problem,\r\n" );
document.write( "\r\n" );
document.write( "  =  kilometers, in problem (1).\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " ANSWER. In 3/4 minutes, the lorry travels kilometers.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "(2) We want to express the speed of the motorist in kilometers per hour.\r\n" );
document.write( "\r\n" );
document.write( " THEREFORE, we convert 3 hours 45 minutes to hours:\r\n" );
document.write( "\r\n" );
document.write( " 3 hours 45 minutes = 3 hours =  hours =  hours.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " Next, the speed is the distance divided by the time. \r\n" );
document.write( " So, in this problem the speed is\r\n" );
document.write( "\r\n" );
document.write( "  =  = reduce fraction =  =  = 38 kilometers per hour.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " ANSWER. In this problem, the speed is 38 kilometers per hour.\r\n" );
document.write( " \r
\n" );
document.write( "\n" );
document.write( "Solved, with explanations.\r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( " |