Penny is the manager of a nursery for pre-school children. She knows that the ratio of the number of adults to the number of children

Penny is the manager of a nursery for pre-school children.
She knows that the ratio of the number of adults to the number of children must be 1 : 8

Penny has 56 children at the nursery.

Work out the number of adults Penny needs for 56 children?
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