Helpp pls need it asap !! :)

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.