conversations.from: human
conversations.value: Can you guide me through solving this problem: Jose had 400 tabs opened up in his windows browser. After about one hour of browsing, he closed 1/4 of the tabs to allows easy browsing. He read some news from different pages, then closed 2/5 of the remaining tabs. If he closed half of the remaining tabs after further analyzing some pages, how many windows tabs did he have remaining open?
conversations.from: assistant
conversations.value: When he closed 1/4 of the tabs, he closed 1/4*400 = 100 tabs.
  The number of windows tabs that remained open is 400-100 = 300
  After reading some news from different pages, he closed 2/5 of the remaining tabs, a total of 2/5*300 = 120 pages.
  The number of tabs that remained open is 300-120 = 180
  If he closed half of the remaining tabs after further analyzing some pages, he closed a total of 1/2*180 = 90 pages.
  The total number of tabs that remained opened is 180-90 = 90