Kalon and his friend marna own a chimney sweep service company. working together, they can clean a chimney in 12/7 hours. if it takes kalon 4 hours to clean a 20-foot chimney by himself, how long does it take marna to clean the same size chimney by herself?

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Which statement best explains why ben uses the width hi to create the arc at j from point k

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?