There are 72 girls playing in the playground 3/7 of the children in the playground are boys how many children are playing in the playground altogether show your working out.

Respuesta :

fraction of girls =  1 - 3/7 = 4/7 

4/7 is equivalent to 72 girls
1/7  ..  ..  .............   72 / 4 = 18
Total number of children = 7/7   = 18*7 =  126 Answer