He has a piece of wire that is 18 feet long .he cuts off 20% of the wire. then he cuts the remaining pieces of wire into 6 equal pieces . what is the lengths of each pieces

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?