Amount of butter Chef used = 400g
1 g = 0.035274 oz
Therefore, 400 g = 0.035274 x 400 oz = 14.1096 oz
A) Chef Jacqueline should use __14.1096______ oz of butter.
1 g = 0.00220462 pound
Therefore, 400 g = 0.00220462 x 400 pound = 0.881848 pound
B) Chef Amy should use _0.881848________ pounds of butter.