The first thing we need to know is how much grass the grasshopper needs to eat. We have: "must eat half its body weight in grass each day": (2 grams) * (1/2) = 1 gram Then, "1 blade of grass weighs 0.1grams" Then the amount you need to eat is given by: N = (1) / (0.1) N = 10 blades of grass Answer: the grasshopper needs to eat 10 blades of grass each day