Sally's mass is “W” kg. Her mother is 6 times as heavy as Sally. Her brother's mass is 1/3 her mother's mass. Hence Sally's brother's mass in terms of “W” is

Ineed me i stuck and i don’t want to get it wrong

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?