Answer:
a) 11 and 5/6 b) 10 and 1/2
Step-by-step explanation:
a) In order to add 4 1/2 and 7 1/3 you need to give the fractions a common denominator, which is 6. This leaves you with 4 3/6 and 7 2/6, adding those you get 11 5/6 as the total weight of fruits she purchased.
b) To subtract 1 1/3 from 11 5/6 you need to make 1/3 have a denominator of 6 so you subtract 1 2/6 from 11 5/6, leaving her with 10 3/6 or 10 1/2 kg.
