View of /trunk/NationalProblemLibrary/ASU-topics/set119LinearSystems/p9.pg

    1 #DESCRIPTION
    2 ##  Algebra problem:  Systems of equations
    3 ##ENDDESCRIPTION
    4 
    5 ##KEYWORDS('algebra', 'pair of lines', 'story question')
    6 
    7 DOCUMENT();        # This should be the first executable line in the problem.
    8 
    9 loadMacros(
   10 "PGasu.pl",
   11 "PG.pl",
   12 "PGbasicmacros.pl",
   13 "PGchoicemacros.pl",
   14 "PGanswermacros.pl",
   15 "PGauxiliaryFunctions.pl"
   16 );
   17 
   18 TEXT(beginproblem());
   19 $showPartialCorrectAnswers = 1;
   20 $x=random(5,20,1);
   21 $y=random(5,20,1);
   22 $sum = 10*$x + 25*$y ;
   23 $value = $sum/100;
   24 $ttl = $x + $y;
   25 
   26 BEGIN_TEXT
   27 A man has $ttl coins in his pocket, all of which are dimes and quarters.
   28 If the total value of his change is $DOLLAR \{ sprintf("%.2f",$value) \}, how many dimes and how
   29 many quarters does he have?
   30 $BR
   31 Your answer is:
   32 $BR
   33 Number of dimes equals \{ans_rule(25) \}
   34 $BR
   35 Number of quarters equals \{ans_rule(25) \}
   36 $BR
   37 END_TEXT
   38 
   39 $ans1 = $x;
   40 $ans2 = $y;
   41 
   42 ANS(std_num_cmp($ans1));
   43 ANS(std_num_cmp($ans2));
   44 
   45 ENDDOCUMENT();        # This should be the last executable line in the problem.
   46