Three people each took 5 tests. If the ranges of their scores in the 5 practice tests were 10, 20 and 32, what is the minimum possible range in scores of the three test-takers? Options:	A) 15	B) 35	C) 50	D) 20	E) 10
I simply looked at the 3 different possible scores for each individual test: 10,32,20   We have to find the minimum range:    32-10= 
<gadget id="calculator"> 32-10</gadget>
<output>22</output>
22   32-20= 
<gadget id="calculator">32-20</gadget>
<output>12</output>
12   20-10= 
<gadget id="calculator">20-10</gadget>
<output>10</output>
10   The find the minimum range, you have to make the set of the 5 scores as small as possible.   Which means that 4 of the 5 scores of each individual person is zero.   10*5= 
<gadget id="calculator">10*5</gadget>
<output>50</output>
50.   Answer:50
<result>C</result>
Three people each took 5 tests. If the ranges of their scores in the 5 practice tests were 10, 20 and 32, what is the minimum possible range in scores of the three test-takers?