Answer:
Julie had 10 coins
Step-by-step explanation:
Since there are 28 coins and Richard has 8 more coins than Julie
You can subtract 8 from 28 and get 20
then you would divide 20 by 2 since there are two people( Richard and Julie) Which would give you 10
Since Richard has 8 more coins and each of them have ten you would add 8 to the 10 and you would get 18
Meaning that Richard had 18 coins and Julie had 10 coins