There are 100 freshmen divided into 4 teams to participate in military training. The number of the first team is (4/3) times the number of the second team, and the number of the first team is (5/4) times the number of the third team. How many people are there in the fourth team?
有100名新生分成4个队参加军训，一队人数是二队人数的(4/3)倍，一队人数是三队人数的(5/4)倍，那么四队人数有多少人．
<gadget id="calculator">100 - 20 - 15 - 16</gadget>
<output>49</output>

<result>49</result>