A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 75% pure antifreeze. In order to obtain 60 gallons of a mixture that contains 60% pure antifreeze, how many gallons of each brand of antifreeze must be used

Country carpets charges $22 per square yard for carpeting, and an additional installation fee of $100. city carpets charges $25 per square yard for the same carpeting, and an additional installation fee of $70

The circumference of a circle is 5 pi cm. what is the area of the circle?

Part of the total score for each program is the sum of five program component scores. on the free program, the sum of these five program component scores is multiplied by a factor of 2.0. yuzuru hanyu, of japan, earned scores of 9.07, 8.96, 8.89, 9.21, and 9.36 for the program components portion of his free program. how many total points did he receive for this portion?