Answer:
A. 1. 6min. 2. 30min.
B. 1. Sandra 2. 2 and 1/4
Step-by-step explanation:
B. 2 and 1/4 < 4 and 2/4-1/2 (Sandra)
4 and 2/4 - 1 and 1/4 = 2 and 1/2
