Asmall sofa has a mass of 30 kilograms. a pillow on the sofa has a mass of 300 grams. how many pillows would it take to equal the mass of the sofa?

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package