Answer & Step-by-step explanation:
500 is roughly about 83% of 600 (we know this because 500/600 = 0.833)
If she is following the recipe, then if she is using 83% of the water shown in the recipe, then she will be putting in about 83% of every ingredient.
480 * 0.83 = 398g flour
12 * 0.83 = 9.96g salt
6 * 0.83 = 4.98g yeast
30 * 0.83 = 24.9ml oil
and 500ml water