There were 20 boys skating on the rink, which is 12 people more than girls. How many children were there?

1) Reduce the number of boys at the rink by 12 and determine how many girls were at the rink:
20 – 12 = 8 girls.
2) Add up the number of boys and girls at the rink and find out how many children there were at the rink:
20 + 8 = 28 children.
Answer: there were a total of 28 children at the rink.

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