Answer:
360g flour
Step-by-step explanation:
10 pancakes need 120g of flour.
30 pancakes need x g of flour.
To find x, you first find the ratio between the pancakes and flour.
120g flour / 10 pancakes = 12 g flour needed per pancake
So if you have 30 pancakes,
12g of flour is needed per pancake * 30 pancakes
= 360g of flour is needed for 30 pancakes