1-A student studies math for 1 5/7 hours and science for 3 1/19 hours over the weekend. How much time, in hours, did this student study for math and science altogether?
2-A metal alloy is made by mixing 99/17 ounce of Metal A with with 3/11 pound of Metal B. What is the total weight of the alloy in pounds?
3-A baker mixes 3.1 ounces of butter with 227.6 grams of flour. What is the total weight of the mixture in grams?
4-A carpet cleaner charges $0.99 per square foot to clean carpet. In the next house he is going to clean, the client reveals a perfectly circular carpeted room. If the room measures 45 feet in diameter, how much will he charge?