out of 150 class one- third opte for german, two fifth for italian ,and the rest for french find how many opted for french

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Charlie tosses five coins.what is the probability that all five coins will land tails up.