The owner of Dennis’s garage wants to fill a 55 gallon drum with a 20% winter mixture of antifreeze for his customers. Denis wants to mix 100% antifreeze with a 10% antifreeze mix to get a 20% mixture. How many gallons of 100% antifreeze and 10% antifreeze does he need in order to fill the drum

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5