Answer:
just multiply everything by 2
Step-by-step explanation:
so 2 1/2 convert into 2.50 the 2.50x 2= 5 c of flour then 0.75x2= 1.5 or 1 1/2 c of sugar , 1/4 into 0.25 the 0.25x 2= 0.5 so 1/2 c of baking powder , 1/2 into 0.5x2= 1 c of salt , 1 1/4 into 1.25x2= 2.5 or 2 1/2 c of butter , 2 eggsx 2 times = 4 eggs and finally 1 1/2 into 1.5x 2= 3 c of vanilla there double everything the was honestly a drag lol