Sandra makes a pizza. she puts mushrooms on2/8 of the pizza. she adds green peppers to 5/8 of the pizza. which toppings covers more of the pizza?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint