Answer:
40% , 24% , 36%
Explanation:
first express each as a fraction then multiply the fraction by 100%
A
× 100% = 0.4 × 100% = 40% used for bread
B
× 100% = 0.24 × 100% = 24% used for biscuits
C
percentage not used = 100% - (40 + 24)% = 100% - 64% = 36%