Final answer:
Marcy has enough beef for her recipe as she has 1,500 grams which is more than the required 900 grams.
Step-by-step explanation:
When adding beef to a recipe, it is important to consider the required amount and the amount you already have.
In this case, Marcy's recipe calls for 900 grams of beef, but she has 1.5 kilograms in her package. We need to convert these measurements to the same unit.
Since there are 1000 grams in a kilogram, Marcy has 1,500 grams of beef. Now we can compare the two amounts. 1,500 grams is more than 900 grams, so Marcy has enough beef for her recipe.