Answer: 4 1/2 ounces
Explanation:
Since there are 6 coins that weigh 3/4 ounces each
we should multiply 3/4 by 6
6 becomes 6/1
then you multiply straight across
6/1 x 3/4 = 18/4
the mixed number of that fraction is 4 and 2/4,
but you can simplify it more to make it 4 and 1/2
the answer is 4 1/2 ounces