conversations.from: human
conversations.value: Since the 40th president launched his reelection campaign today, he has raised $10,000 in campaign funds. His friends raised 40% of this amount and his family raised 30% of the remaining amount.  The rest of the funds are from his own savings for the election. How much did he save for the presidency?
  What is the solution?
conversations.from: assistant
conversations.value: The total amount of money raised from friends contribution is 40/100*$10000 = $4000
  Minus his friend's contribution, the 40th president has raised $10000-$4000 = $6000
  The family raised 30/100*$6000 = $1800
  If the family raised $1800, the savings the 40th president had for the campaign is $6000-$1800 = $4200