Question

Wyatt uses 3.15 cups of flour in a recipe that makes 9 shortcakes Cora uses 2.4 cups of flour in a recipe that make 8 shortcakes how much more flour per shortcake is needed for Cora’s recipe

Answer 1

Wyatt  -  3.15/9 = 0.35 cups of flour per shortcake
Cora -     2.4/8 =0.4 cups of flour per shortcake

0.4 - 0.35 = 0.05  cups of flour per shortcake
Cara needs 0.05 more cups of flour per shortcake.