Mary covered her kitchen floor with 10 tiles. the floor measure 6 feet long by 5 feet wide. the tiles are each 3 feet long and w feet wide, what is the missing feet wide?

The sum of two numbers is 12 and their difference is 18 what are the two numbers

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 $s$?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?