Sue has 7/8 of her book left to read. if she reads another 2/7 of the book, how much of the book will she have left?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?

Me because i don't understand how to do it.: )