Megan starts with a piece of wood that is 2 meters long. she cuts off two pieces that are each 56 cm long, how long is the piece of wood that is left over in meters?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of