human
Iain has 200 pennies. He realizes that 30 of his pennies are older than he is. If he wishes to get rid of these pennies and then throw out 20% of his remaining pennies, how many will he have left?
assistant
How many pennies does Iain have after removing the older ones? ** Start with taking out the older pennies 200 pennies - 30 pennies = <<200-30=170>>170 pennies
How many pennies does Iain have after removing the older ones? ** Take the 170 pennies * .20 = <<170*.20=34>>34
How many pennies does Iain have after removing the older ones? ** 170 pennies - 34 pennies = <<170-34=136>>136 pennies.
#### 136