Respuesta :

In a ratio of 7:3, for every 7 adults you have 3 children.  So 30% of the total are children.  I.e.  if you have 10 people  .7 times (10) are adults or 7 and .3 times (10) are children or 3.    So for 370 people,  .3 times 370 are children, or 111.

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