The question was this:

Write a Maple procedure to find the four positive numbers (a, b, c, d)

 with two decimal digits (e.g. 1.23) such that their sum and product is 

equal to 7.11.  i.e.

a + b + c + d = a*b*c*d = 7.11 

so far i have 

equal:=proc();

local a,b,c,d,i,j,k,sum;
	#a,b,c,d - four positive numbers with two decimal digits
	#i,j,k - counting variables
	#sum - the sum of four numbers

for i by 0.00 to 7.11 do
  a:=i;
	for j by 0.00 to 7.11 do
	  b=j;
		for k by 0.00 to 7.11 do
		  c:=k;
			d:=7.11-a-b-c;

		sum:=a+b+c+d;
	if a+b+c+d=a*b*c*d and sum=7.11 then
	print(`When a=`,a,`b=`,b,`c=`,c,`and d=`,d);
	print(`a+b+c+d=a*b*c*d=7.11`)
	else
	

end if;
end do;
end do;
end do;
end proc;